price：$9.07
KYE Systems America Corporation - GENIUS
Usually ships in 24 hours Core2Duoノートレビュー 's review (tommy's toy) 『i really enjoy this product, the realisem is great as well as the overall preformance. for the price this is the best buy for the money.i would recomend this product to my friends.』
(It works, just not enough control) 『I bought this for me and my son. We both play some racing games on the PS2, and we play NFS as well. This steering wheel wasn't used long, for only one reason: that it just doesn't offer the same kind of control as the original hand controls do. The steering wheel only moves a half turn to the left, and a half turn to the right. So, it takes a while to really get used to keeping your car on the road with it. It is fun having an accelerator and brake pedal at first, but again, it just doesn't allow you to make those tiny movements when you need to.
You get what you pay for. Otherwise, it works fine with the PS2.』
(El-Junko) 『Genius Twin Wheel F1, mini Vibration, PC/PS2 combo wheel. Vibration Feedback F1 Racing Wheel. A bunch of junk!』
(Good after some hassle) 『The setup works great for both PC and PS2. BUT....it was a gift and when it arrived the lap adapter was not in the box. Disappointment to my son. After a couple phone calls, they finally agreed to send a new lap adapter which arrived about a week later. Would be 5 stars if they would have included the lap adapter to start.』
(Awesome Product) 『This Genius Twin Wheel is great! The built in buttons are really convenient. Pedals have fast reaction. Totally give it a 5 star!』 『The Genius TwinWheel F1 is a 2 in 1 racing wheel for PS2 and PC and is just the thing to keep you in control when playing any racing games, especially the F1 racing campaign with the F1-like design. Get bumps, collisions, crashes, TwinWheel F1 comes with the Immersion-patented TouchSense technology and advanced vibration feedback function and feel every different action feeling that you make in the game.It includes a D-Pad and four action buttons for advanced control as gaming software requires, such as direction controls or horn and view change. Foot pedals provide real driving experience for brake and accelerate controls. With a central clamp for perfect stability and a lap attachment, TwinWheel F1 allows you to enjoy comfortable driving from your favorite couch or chair.Plus, the shifter gears mounted under the wheel for fast brake and acceleration or easily gear down/up. Are you ready for setting the TwinWheel F1? When the green flag drops, you'll be ready to outrace your opponents.』
Core2Duoノートレビュー 's review (NOT AN AMERICAN POWERED ADAPTOR) 『The unit comes ready for overseas connection. No where is it mentioned that if using 110 you need and adapter and convertor.. Otherwise it is useless. This is really more a comment on the ad not stating this outright.』 『AC Adapter for Casio EX-F1 camera』
price：$439.00
Sigma Corporation
Usually ships in 24 hours Core2Duoノートレビュー 's review (Great lens, but a little soft.) 『I know I will get a ver soft focus at f1.4 but it seems like it is softer at f2 then my Canon 50mm @ f1.8. Still a great lens. Love that I can get the low light shots without the flash. I just have to focus more on what the camera is focusing on..』
(Sigma 30mm + Canon T1i = :-)) 『My gear:
Canon Rebel T1i Tamron 28 - 75mm F/2.8 Sigma 10 - 20 Canon 50mm F/1.8 Kit lens which I do not use
On the T1i the 1.6 crop factor makes the 50mm akin to the 85 in terms of 35mm equivalent. I've shot many pictures with the 50mm and I was extremely pleased with the lens. However it is just too tight to use in many situations. On several occasions I found myself backing right out of the room to get the shot!
Enter the 30mm Sigma. The minute I put on the frame I loved it. The lens feels sturdy. Those who use the canon 50mm f/1.8 know what I'm talking about when I say that lens feels like a toy. The Sigma feels like a good chunk of glass should.
The field of view is about the same as the 50mm on a standard full-frame SLR (or DSLR). It feels natural to use the lens - what you see what you capture. Focus. The focus is tack sharp - on par with the Canon 50mm F/1.8 (aka "the Nifty Fifty"). I have no focus issues at all - the autofocus gets it better than I can do manually even if I do live display and 10x zoom. It is soft at 1.4, softer than the 50mm at 1.8. But, by the time I step it to 1.8 it is very sharp - and I have 1.6 and 1.4 available in super low-light or to really tighten the DOF. (note that I've only used f/1.4 in very low light so far.) The AF does hunt in low light - but I can't fault the lens for this since it happens with all my lenses on the T1i frame.
As a prime lens is sharper and produces better IQ than my 28 - 75 Tamron, even though I have to overlap with this lens. This is my new "default" lens. Back in the day the SLRs used to ship with a 50mm lens and now having this 30mm on my 1.6 crop sensor feels just right. I've had no focus issues with the lens - it focuses right on about 98% of the time which is the same with all my lenses, including the Canon ones. In summary, if you're looking for a good prime lens I would recommend the Sigma 30mm. In my experience the lens is just great. 』
(A unique lens) 『Before starting the evaluation of this lens it's important to understand that this is the only auto-focus lens that is near "normal" on cropped DSLRs with max aperture below 1.8 and costing less than $1000. It is also substantially smaller than other lenses with such a focal range and aperture. It is therefore not surprising that this lens will come with a number of compromises and therefore will not be to everyone's liking. The good thing about this lens that it is indeed F1.4 lens. It's quite sharp in the center right from F1.4. Stopped to 2.0 the center is excellent and most of the frame is good. At F5.6 even the far corners are good (but not excellent). In most situations the bokeh is pleasing making the lens suitable for portraits and subject isolation in general. Besides the corner sharpness the main optical flaw of the lens is high chromatic aberrations, or colored fringes on contrasty edges. Most fast lenses (including for example Canon 50mm F1.4) have this problem (although often to a lesser degree) so I cannot blame Sigma too much. In addition the problem can be partly fixed in software. The AF is fast the lens is quite compact and well built. Another nice plus is 3 year warranty.
Overall I'd happily give this lens 5 STARS if not for Sigma quality control. The first lens I've got was back-focusing. I've got it replaced by the seller. The second lens was misfocusing randomly in about 25% of the shots. I've sent it for calibration to Sigma and it returned both misfocusing and backfocusing. I've sent it again for calibration together with my camera, only to get it back to the original state ... still misfocusing randomly in about 25% of the shots. I've sent it once again to a different Sigma repair center, but the lens again was not fixed. At that time I've figured out the problem with my lens. It misfocused when focusing from a more distant to a closer point. I've called Sigma and managed to convince them to give me a replacement. At long last (6 months later) I have a lens that focuses accurately. On the positive side of things the customer service was nice and it paid for all shipping of the lens to the center and back (except the first one). 』
(A+ for what you pay.) 『The Sigma 30 1.4 is a great lens. It is sharp wide open and AF is fast and quiet. This lens paired up with my 7D is a hell of a match. The only thing I wish it had was IS.』
(Imperfect but capable fast prime) 『I was drawn to the Sigma after having used Nikon's competing 35mm f/1.8 lens and hearing many comments to the effect that, in addition to its greater speed, the Sigma offered better bokeh and significantly better build quality. I also personally prefer the 30mm perspective for use as a "normal" lens on DX - so given the praise I'd seen for it, I bought a copy of the Sigma and have spent a fair amount of time using it, alongside the Nikkor, under a variety of shooting conditions.
The advantages noted for the Sigma do exist, and they do work in its favor. Nevertheless, I came away disappointed, and have gone back to using the Nikkor exclusively despite its minor drawbacks.
There are two primary reasons for my dissatisfaction, which combined to lead to a single effect: unacceptable image quality at large apertures. Let me first say that for my purposes, the only reason to use a fast prime lens is to use it at large apertures. In circumstances where I don't need a large aperture, I will keep one of several excellent modern zoom lenses on my camera, any of which offer sharpness and color rendition that matches or exceeds that provided by even good prime lenses. A good zoom gives versatility in terms of focal length, and I am not a purist in terms of equipment choice: I use what I feel to be the best tool for the circumstances I find myself in. The only time I find a prime lens preferable is when I need to use a large aperture, and consequently such a lens' performance at large apertures becomes by far its most important quality.
I was, unfortunately, very quickly disappointed with the Sigma's image quality. After subsequent fiddling, both in regular use and in semi-formal "testing," to determine the reasons for the poor sharpness, I realized there were two separate issues contributing to its mediocre performance: first, it focused inconsistently. This seems distinct from most focusing-related complaints here, as my copy didn't consistently front-focus or back-focus: those problems can apparently be fixed, at least on some samples. This lens simply wasn't consistent enough in its focus to hit its depth of field at wide apertures, a rather critical failure for a fast lens. Even among Nikkors, some lenses are better than others, and one big advantage of the newer AF-S Nikkors is that they tend to focus very consistently, if not always quickly: they will make the small adjustments necessary to keep the subject in sharp focus, even when depth of field is narrow, and they consequently provide a very large proportion of perfectly focused images. The Sigma, at least my copy, was not able to do that.
Second, exacerbating the focus issue, was a general lack of sharpness at large apertures even when focus was perfect. Whether the subject was a simple test chart or a real-life target, the lens' sharpness was just not very good as the aperture widened past about f/4. It was worst wide open, where I would characterize it as useable but fairly poor, and not, unfortunately, much better at f/1.8 or f/2. F/2.8 was better, but still markedly soft, f/4 was fairly sharp but still not on the level I expect from today's high-quality lenses. Along with the lack of sharpness at larger apertures came a lack of contrast - photos taken with this lens at f/1.8 were significantly less contrasty than those taken with the Nikkor 35/1.8, a typical side effect of poor sharpness as the colors run together within areas of fine detail, rather like a small-scale water color painting.
Were these performance issues significant enough to be noticeable on normal-size prints? At f/4, probably not. At f/2.8, maybe. However, there is no point, for me, in using a lens like this unless I can effectively use it at f/1.8 and below - and at those apertures, the lack of detail and contrast would keep me from using it except in shots where detail was simply not important - and yes, it would be noticeable even at ordinary print sizes, or displayed un-magnified on a computer monitor.
My conclusion, then, was that the lens did not meet my basic personal requirements for image quality. It does, however, have its good points, and in giving it a rating I consider it a three-star lens. It is genuinely fast, and its f/1.4 aperture can allow one to capture images that would simply not be possible with other lenses. It is reasonably sharp at ordinary apertures, and it is capable of producing colorful, contrasty images, the equal of even very good Nikkors - a probable testament to Sigma's use of high quality coatings. Its build indeed appears very stout; and if its focus feel is the typically high-friction, gritty feel of modern internal-motor lenses, then at least the focus ring is well placed, accessible, and easy to use.
A few miscellaneous comments that might be of importance to some users of this lens, and in particular some points of comparison to the 35/1.8 Nikkor:
- The Sigma uses a 62mm filter thread. This may be relatively Canon-friendly but is not a common size on modern Nikon gear. Consequently a new lot of filters and step-up-rings would need to be purchased if I were to keep the lens, adding cost and bag clutter. The Nikkor uses a very standard (for Nikon) 52mm filter.
- The Sigma rear cap is infuriating in that it only goes on the lens in one orientation. Every Nikon, Tokina, etc. lens I've used allows the cap to be put on in any of several orientations, and in comparison the Sigma cap is a pain in the neck to use. The best option here might be to use a spare Nikon cap for the lens, or buy one if you don't already have an extra.
- I would not describe the bokeh of the Sigma as excellent. It is much better than most newer Nikon and Nikon-mount lenses, but that is primarily because most such lenses, unfortunately, have poor bokeh. The Nikon 35/1.8 has poor bokeh. The Sigma has what might appropriately be called "neutral" bokeh, in that the discs created on the image by out-of-focus point highlights have approximately even intensity of illumination across their diameters. A lens that has bad bokeh will show bright rings at the edges of these discs, while a lens with excellent bokeh will show diminishing intensity from the center of these discs to the edge. The latter allows all out-of-focus points to blur together gently, while the former creates hard edges on out-of-focus objects. The Sigma is between these extremes.
- Bokeh is of lesser importance in a "normal" lens than in a lens of longer focal length. This is simply because the degree of blur attainable is less at smaller focal lengths. The Nikkor and the Sigma can create approximately the same degree of blur (the Nikkor is 35mm, remember), but it is in most cases a subtle out-of-focus effect, not dramatic as it can be with longer or telephoto lenses. Consequently the character of that blur - the bokeh - is less noticeable and therefore less important. It is simply harder to generate unpleasant blur at 30mm/35mm than it is at longer focal lengths. For this reason, I didn't find the Sigma's bokeh advantage to be particularly noticeable in my photography, even when using the lens at large apertures. The exception to this rule is when the lens is used for close-range photography, in which case the background will be thrown well out of focus.
- I prefer the Sigma's 30mm focal length to the Nikkor's 35mm. To my eye, 35mm is just a bit long for a "normal" lens on DX, and I usually want a bit more working space than I'd like at 35mm. In this respect I prefer the Sigma - although Nikon's 28mm f/2.8 is another, very inexpensive, alternative.
Final note: This is an honest review of a lens I've actually owned and used, in comparison with other lenses that I've actually owned and used. Unfortunately, there are always people who click "negative" reviews as unhelpful no matter how accurate the review, and that does a dis-service to other Amazon customers as those reviews wind up at the bottom where they are not seen. I wish more honestly critical reviews were available to help me make purchasing decisions, and I hope you think so as well.
Other Lenses:
I've had the opportunity to own and use many different Nikon lenses and have posted my impressions of some of them here on Amazon. For those interested, here are short summaries. I have used all these lenses on Nikon DX-sized DSLRs, most recently my current D90. Refer to the full reviews for further detail.
Nikon 28mm f/2.8 AF-D: *** Competent, sharp lens is a good fit as a bargain DX "normal" prime. Slow f/2.8 max aperture poor. Very inexpensive in used market.
Nikon 35mm f/1.8 AF-G: ****1/2 Terrific lens at a bargain price. Not without flaws, but excellent in all important respects. A pleasure to use.
Nikon 35mm f/2 AF-D: **** Sharp, especially at large apertures, moderate contrast. Classic "normal" lens for DX but consider new 35mm f/1.8 AF-S instead.
Nikon 50mm f/1.8 AF-D: *** My sample was unacceptably poor at large apertures. Perhaps a below-average sample. Focal length not ideally suited to DX.
Nikon 85mm f/1.8 AF-D ****1/2 Very good short-to-moderate telephoto on DX. Acceptable at large apertures, very sharp stopped-down, moderate contrast. Potentially excellent for portrait use.
Nikon 16-85mm VR ***** Very sharp at all settings, excellent contrast, very useful zoom range including true wide-angle at 16mm. Excellent VR. Best-kept secret for DX users.
Nikon 28-200mm AF-G *** Of two samples, one was excellent and one poor, so watch for sample variations. Very good contrast. Not ideal hand-held due to lack of VR. Not ideal for tripod use due to design.
Nikon 55-200mm VR **** Very good lens, very good sharpness and contrast, no fatal flaws. Cheap feel and feature-challenged, but has effective VR. A bargain.
Nikon 70-300mm VR *** My sample had very poor performance above 200mm, good to very good elsewhere. Good contrast, generally very good focus performance. Good sports/action lens. Not good where critical sharpness is desired. Possibly a below-average sample.』 『This large aperture 30mm F1.4 EX DC HSM lens is designed to match the APS-C size image sensors of digital SLR cameras. Two SLD glass elements are especially effective in the compensation of magnification chromatic aberration. Glass mold aspherical lens at rear group of lens reduces color aberration and provides high-quality image results. From 40cm (15.7 inch) minimum focusing distance to infinity, this lens creates very sharp images with high contrast. The HSM models provide quiet high-speed auto-focus shooting, as well as full-time manual focus. Large Maximum Aperture of F1.4 can perform superbly in a great range of applications, including snapshots, portrait, indoor shooting and landscape photography. Minimum Aperture - F16 Minimum Focusing Distance - 40cm, 15.7 inches Maximum Magnification - 1 - 10.4 Filter Size - Diameter 62mm Lens Hood DiaPetal Hood Two SLD (Special Low Dispersion) glass elements and an hybrid aspherical lens, provides the utmost correction for all types of aberrations Dimensions - Diameter 75.5mm X Length 59mm, 2.97 inches x 2.3 inches Weight - 15.2 ounces (430 grams)』 『Designed to match the APS-C size image sensors of Nikon digital SLR cameras, the Sigma 30mm f/1.4 lens is an ideal choice for a wide range of applications, including snapshots, portraiture, indoor shooting, and landscape photography. The 30mm lens relies on two special-low-dispersion glass elements and a glass-mold aspherical lens. Combined, the construction details correct for all types of chromatic and color aberrations. The lens is also equipped with a Hyper Sonic Motor (HSM) that supports quiet, high-speed autofocus, but also turns off should you prefer full-time manual focusing. Other features include a maximum aperture of f/1.4, a 62mm filter mount, and a one-year warranty.
Specifications
Focal length: 30mm
Maximum aperture: f/1.4
Lens construction: 7 elements in 7 groups
Angle of view: 45 degrees (SD format)
Number of diaphragm blades: 8
Minimum aperture: f/16
Minimum focusing distance: 15.7 inches
Maximum magnification: 1:10.4
Filter size: 62mm
Corresponding AF mounts: Nikon
Dimensions: 2.97 inches in diameter and 2.3 inches long
『Samsung HD103UJ 1TB SATA2 7200rpm 32MB Hard Drive provides an exceptional blend of power efficiency and performance making it an ideal solution for power-conscious enterprises. This new drive delivers best-in-class power management and thermal emissions to help manufacturers meet energy compliance targets and extend drive life.』
『One of the most important accessories for each lens you own. A lens hood provides multiple functions: it shades the lens from stray light, improving your contrast and image quality; in inclement weather, it can assist in keeping moisture or wind-blown debris off the lens; and it protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles.
Jankos DF-62 design to replace the Canon ES-62 is Compatible with the following Canon lenses: * EF 50mm f1.8 II lens』
price：$19.24
CASIO
Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your credit card will not be charged until we ship the item. 『Lithium-Ion Battery for Casio EX-F1 High Speed Digital Camera.』
Core2Duoノートレビュー 's review (Price) 『The price was very good. I like shopping Amazon.com a lot. I used this inexpensive battery instead of purchasing a new lighting system for my camera, which would have been more than I could afford.』 『Power-sonic has more than 30 years experience in the battery industry. Their products are sold worldwide for a broad range of electronic and industrial applications where cost effective DC power is required.』
Core2Duoノートレビュー 's review (Compact, solid build, fast/quiet focus, but sensitive to shake, expensive) 『Solid and compact, this lens focuses fast, taking crisp photos, but is a bit expensive, sensitive to camera shake, and has an odd effective-focal-length.
The USM AF is quiet and fast, having no trouble finding focus even in very low-light, attached to my Canon EOS Rebel T1i 15.1 MP CMOS Digital SLR Camera with 3-Inch LCD and EF-S 18-55mm f/3.5-5.6 IS Lens.
However, in the same low-light (nightlife) situations, shooting at Av f/1.8 - f/2.5 (ISO1600), I experienced notable blur. The lens seems more sensitive to shake than I expected; that might just be me, but I think it would benefit from IS. Images seem a little soft at f/1.8, sharpening up by f/2.8, but are usable all throughout the range.
Important to note: on cropped-sensor cameras like the Canon Rebels and 40/50D (check Wikipedia for "APS-C" and for "Crop Factor" for details), the 1.6x crop-factor means this lens is effectively a 45mm. That's kind of an odd focal length. I have to back up several feet behind where I'd be with my miniature-looking point&shoot to get the typical "small group of people" shot, but a close-up or typical face+shoulders portrait requires cropping.
This seems like the right focal-length for focused outdoor shots (where you're shooting one subject with some of the surroundings), kids+pets, and general walk-around purposes. The short length and broad aperture also makes this a good walk-around lens, although the limited wide-angle was sometimes frustrating.
The lens is solid and heavy, feels very well-constructed, with "big" glass.
I found the colors slightly cooler and images slightly softer than the Canon EF 50mm f/1.8 II Camera Lens. Compared to that much cheaper lens, the EF28mm feels much better made, is much quieter, slightly faster focusing, and has a more usable focal length on APS-C cameras.
I found the quality and colors nearly identical to the Canon EF 35mm f/2 Wide Angle Lens for Canon SLR Cameras. Compared to that cheaper lens, the EF28 feels better made, is much quieter, much faster focusing (especially in low-light), and is slightly more useful than the EF 35mm's effective APS-C length of 56mm.
Recommended for multi-purpose use, but outdoor-only photographers may do better with the cheaper Canon EF 35mm f/2 Wide Angle Lens for Canon SLR Cameras which is much noisier and focus-hunts horribly in low-light, but takes comparable photos for being notably cheaper/smaller.』
(Okay lens, but could be much better for the price...) 『I rented this lens for a week to see how it would perform. I tried various shots indoors and outdoors in a variety of settings.
I was looking at a wide angle lens for my XSi, which is a crop factor, so this would end up around 45mm on a full frame.
Good: 1) Very fast focus 2) Able to perform a manual focus override 3) Lightweight and small 4) Good bokeh
Bad: 1) You need to stop down to f/4 in order to get anything resembling a sharp image. The center was generally fine, but the corners were terrible, even on a crop camera. This was an huge disappointment, as the 50mm f/1.4 was razor sharp at f/2. 2) I noticed a lot of CA until you stop down to about f/2.8, when it became reasonable. 3) Price - it's a little high (~$500) considering you can buy the 17-40 f/4L for about $200 more, and you get more focal range to boot.
Overall, I was very disappointed with the results, especially when this was after using the 50mm f/1.4, which was simply incredible. You would be better off in the long run by purchasing the 17-40 f4/L, which is what I'll be purchasing next.』
(Good multi-purpose lens) 『This is a great lens I was able to use right away for a conference. I was able to get multiple shots without the use of a flash.』
(Not worth the money) 『Good looking quiet lens, but my version is very soft, not even close to a 17-55 f 2.8 EFS zoom. This puzzles me, since the zoom is not for a full frame and is a zoom. But after testing the 28 f/1.8, it doesn't start to sharpen up till 2.8 or above. which means the 1.8 stop is useless. it's not much sharper at 2.0 or 2.2. It also has flare, lots of CA and doesn't always focus correctly. By comparison, my 17-55 F/2.8 is razor sharp even at 2.8, focuses perfectly every time, and has image stabilization. Big disappointment from Canon. I wonder why they don't introduce primes for EF-S. I have an XSi, 10-22, 17-55 f/2.8 and the 70-200 f/2.8 IS L (a razor sharp lens!) so I guess I don't need any primes. Save your money and spend it on the camera (7D), not this prime lens.』
(Versatile Lens) 『This really is a lovely little prime. I shoot on a full frame camera, a 5D, and the dramatic and largely undistorted images this baby produces are a real pleasure. You really get the best of both worlds with this lens, from a shallow DoF and luminance perspective. The wide glass gathers a lot of light but also keeps the DoF from being as tissue thin as a 50mm at f1.8. The auto-focus is pretty reliable, less so in very low light, but it generally gets the job done. If you like shooting prime and like the cinematic quality of a wide lens the EF 28mm f1.8 USM will spend a lot of time on your camera. If you don't like to frame with your feet then you might want to look into a zoom that cover this range, but I doubt even the L will look as good.』 『With the large maximum aperture, excellent background blur is possible even with a fast shutter speed. The aspherical lens element makes the lens compact and corrects spherical aberrations. The image is sharp even at the edges. Lead-free glass is used.』 『The Canon EF 28mm wide-angle lens lets you capture more in the frame by broadening the angle of view and increasing the depth of field. This not only expands the apparent distance between the foreground and background, but brings more area into focus--a must for photographers who want vivid nature shots or crisp group shots. The lens also offers an excellent price-to-performance ratio, with a high-precision aspherical lens that minimizes distortion and other aberrations to produce sharp and high-contrast images. Light enough to serve as your standard wide-angle lens, the EF 28mm carries Canon's one-year warranty.
Focal length: 28mm
Maximum aperture: 1:1.8
Lens construction: 5 elements in 5 groups
Diagonal angle of view: 75 degrees
Focus adjustment: Overall linear extension system with AFD
Closest focusing distance: 1 foot
Filter size: 58mm
Dimensions: 2.7 inches in diameter, 1.7 inches long
price：$439.00
Sigma Corporation
Usually ships in 24 hours Core2Duoノートレビュー 's review (Great lens, but a little soft.) 『I know I will get a ver soft focus at f1.4 but it seems like it is softer at f2 then my Canon 50mm @ f1.8. Still a great lens. Love that I can get the low light shots without the flash. I just have to focus more on what the camera is focusing on..』
(Sigma 30mm + Canon T1i = :-)) 『My gear:
Canon Rebel T1i Tamron 28 - 75mm F/2.8 Sigma 10 - 20 Canon 50mm F/1.8 Kit lens which I do not use
On the T1i the 1.6 crop factor makes the 50mm akin to the 85 in terms of 35mm equivalent. I've shot many pictures with the 50mm and I was extremely pleased with the lens. However it is just too tight to use in many situations. On several occasions I found myself backing right out of the room to get the shot!
Enter the 30mm Sigma. The minute I put on the frame I loved it. The lens feels sturdy. Those who use the canon 50mm f/1.8 know what I'm talking about when I say that lens feels like a toy. The Sigma feels like a good chunk of glass should.
The field of view is about the same as the 50mm on a standard full-frame SLR (or DSLR). It feels natural to use the lens - what you see what you capture. Focus. The focus is tack sharp - on par with the Canon 50mm F/1.8 (aka "the Nifty Fifty"). I have no focus issues at all - the autofocus gets it better than I can do manually even if I do live display and 10x zoom. It is soft at 1.4, softer than the 50mm at 1.8. But, by the time I step it to 1.8 it is very sharp - and I have 1.6 and 1.4 available in super low-light or to really tighten the DOF. (note that I've only used f/1.4 in very low light so far.) The AF does hunt in low light - but I can't fault the lens for this since it happens with all my lenses on the T1i frame.
As a prime lens is sharper and produces better IQ than my 28 - 75 Tamron, even though I have to overlap with this lens. This is my new "default" lens. Back in the day the SLRs used to ship with a 50mm lens and now having this 30mm on my 1.6 crop sensor feels just right. I've had no focus issues with the lens - it focuses right on about 98% of the time which is the same with all my lenses, including the Canon ones. In summary, if you're looking for a good prime lens I would recommend the Sigma 30mm. In my experience the lens is just great. 』
(A unique lens) 『Before starting the evaluation of this lens it's important to understand that this is the only auto-focus lens that is near "normal" on cropped DSLRs with max aperture below 1.8 and costing less than $1000. It is also substantially smaller than other lenses with such a focal range and aperture. It is therefore not surprising that this lens will come with a number of compromises and therefore will not be to everyone's liking. The good thing about this lens that it is indeed F1.4 lens. It's quite sharp in the center right from F1.4. Stopped to 2.0 the center is excellent and most of the frame is good. At F5.6 even the far corners are good (but not excellent). In most situations the bokeh is pleasing making the lens suitable for portraits and subject isolation in general. Besides the corner sharpness the main optical flaw of the lens is high chromatic aberrations, or colored fringes on contrasty edges. Most fast lenses (including for example Canon 50mm F1.4) have this problem (although often to a lesser degree) so I cannot blame Sigma too much. In addition the problem can be partly fixed in software. The AF is fast the lens is quite compact and well built. Another nice plus is 3 year warranty.
Overall I'd happily give this lens 5 STARS if not for Sigma quality control. The first lens I've got was back-focusing. I've got it replaced by the seller. The second lens was misfocusing randomly in about 25% of the shots. I've sent it for calibration to Sigma and it returned both misfocusing and backfocusing. I've sent it again for calibration together with my camera, only to get it back to the original state ... still misfocusing randomly in about 25% of the shots. I've sent it once again to a different Sigma repair center, but the lens again was not fixed. At that time I've figured out the problem with my lens. It misfocused when focusing from a more distant to a closer point. I've called Sigma and managed to convince them to give me a replacement. At long last (6 months later) I have a lens that focuses accurately. On the positive side of things the customer service was nice and it paid for all shipping of the lens to the center and back (except the first one). 』
(A+ for what you pay.) 『The Sigma 30 1.4 is a great lens. It is sharp wide open and AF is fast and quiet. This lens paired up with my 7D is a hell of a match. The only thing I wish it had was IS.』
(Imperfect but capable fast prime) 『I was drawn to the Sigma after having used Nikon's competing 35mm f/1.8 lens and hearing many comments to the effect that, in addition to its greater speed, the Sigma offered better bokeh and significantly better build quality. I also personally prefer the 30mm perspective for use as a "normal" lens on DX - so given the praise I'd seen for it, I bought a copy of the Sigma and have spent a fair amount of time using it, alongside the Nikkor, under a variety of shooting conditions.
The advantages noted for the Sigma do exist, and they do work in its favor. Nevertheless, I came away disappointed, and have gone back to using the Nikkor exclusively despite its minor drawbacks.
There are two primary reasons for my dissatisfaction, which combined to lead to a single effect: unacceptable image quality at large apertures. Let me first say that for my purposes, the only reason to use a fast prime lens is to use it at large apertures. In circumstances where I don't need a large aperture, I will keep one of several excellent modern zoom lenses on my camera, any of which offer sharpness and color rendition that matches or exceeds that provided by even good prime lenses. A good zoom gives versatility in terms of focal length, and I am not a purist in terms of equipment choice: I use what I feel to be the best tool for the circumstances I find myself in. The only time I find a prime lens preferable is when I need to use a large aperture, and consequently such a lens' performance at large apertures becomes by far its most important quality.
I was, unfortunately, very quickly disappointed with the Sigma's image quality. After subsequent fiddling, both in regular use and in semi-formal "testing," to determine the reasons for the poor sharpness, I realized there were two separate issues contributing to its mediocre performance: first, it focused inconsistently. This seems distinct from most focusing-related complaints here, as my copy didn't consistently front-focus or back-focus: those problems can apparently be fixed, at least on some samples. This lens simply wasn't consistent enough in its focus to hit its depth of field at wide apertures, a rather critical failure for a fast lens. Even among Nikkors, some lenses are better than others, and one big advantage of the newer AF-S Nikkors is that they tend to focus very consistently, if not always quickly: they will make the small adjustments necessary to keep the subject in sharp focus, even when depth of field is narrow, and they consequently provide a very large proportion of perfectly focused images. The Sigma, at least my copy, was not able to do that.
Second, exacerbating the focus issue, was a general lack of sharpness at large apertures even when focus was perfect. Whether the subject was a simple test chart or a real-life target, the lens' sharpness was just not very good as the aperture widened past about f/4. It was worst wide open, where I would characterize it as useable but fairly poor, and not, unfortunately, much better at f/1.8 or f/2. F/2.8 was better, but still markedly soft, f/4 was fairly sharp but still not on the level I expect from today's high-quality lenses. Along with the lack of sharpness at larger apertures came a lack of contrast - photos taken with this lens at f/1.8 were significantly less contrasty than those taken with the Nikkor 35/1.8, a typical side effect of poor sharpness as the colors run together within areas of fine detail, rather like a small-scale water color painting.
Were these performance issues significant enough to be noticeable on normal-size prints? At f/4, probably not. At f/2.8, maybe. However, there is no point, for me, in using a lens like this unless I can effectively use it at f/1.8 and below - and at those apertures, the lack of detail and contrast would keep me from using it except in shots where detail was simply not important - and yes, it would be noticeable even at ordinary print sizes, or displayed un-magnified on a computer monitor.
My conclusion, then, was that the lens did not meet my basic personal requirements for image quality. It does, however, have its good points, and in giving it a rating I consider it a three-star lens. It is genuinely fast, and its f/1.4 aperture can allow one to capture images that would simply not be possible with other lenses. It is reasonably sharp at ordinary apertures, and it is capable of producing colorful, contrasty images, the equal of even very good Nikkors - a probable testament to Sigma's use of high quality coatings. Its build indeed appears very stout; and if its focus feel is the typically high-friction, gritty feel of modern internal-motor lenses, then at least the focus ring is well placed, accessible, and easy to use.
A few miscellaneous comments that might be of importance to some users of this lens, and in particular some points of comparison to the 35/1.8 Nikkor:
- The Sigma uses a 62mm filter thread. This may be relatively Canon-friendly but is not a common size on modern Nikon gear. Consequently a new lot of filters and step-up-rings would need to be purchased if I were to keep the lens, adding cost and bag clutter. The Nikkor uses a very standard (for Nikon) 52mm filter.
- The Sigma rear cap is infuriating in that it only goes on the lens in one orientation. Every Nikon, Tokina, etc. lens I've used allows the cap to be put on in any of several orientations, and in comparison the Sigma cap is a pain in the neck to use. The best option here might be to use a spare Nikon cap for the lens, or buy one if you don't already have an extra.
- I would not describe the bokeh of the Sigma as excellent. It is much better than most newer Nikon and Nikon-mount lenses, but that is primarily because most such lenses, unfortunately, have poor bokeh. The Nikon 35/1.8 has poor bokeh. The Sigma has what might appropriately be called "neutral" bokeh, in that the discs created on the image by out-of-focus point highlights have approximately even intensity of illumination across their diameters. A lens that has bad bokeh will show bright rings at the edges of these discs, while a lens with excellent bokeh will show diminishing intensity from the center of these discs to the edge. The latter allows all out-of-focus points to blur together gently, while the former creates hard edges on out-of-focus objects. The Sigma is between these extremes.
- Bokeh is of lesser importance in a "normal" lens than in a lens of longer focal length. This is simply because the degree of blur attainable is less at smaller focal lengths. The Nikkor and the Sigma can create approximately the same degree of blur (the Nikkor is 35mm, remember), but it is in most cases a subtle out-of-focus effect, not dramatic as it can be with longer or telephoto lenses. Consequently the character of that blur - the bokeh - is less noticeable and therefore less important. It is simply harder to generate unpleasant blur at 30mm/35mm than it is at longer focal lengths. For this reason, I didn't find the Sigma's bokeh advantage to be particularly noticeable in my photography, even when using the lens at large apertures. The exception to this rule is when the lens is used for close-range photography, in which case the background will be thrown well out of focus.
- I prefer the Sigma's 30mm focal length to the Nikkor's 35mm. To my eye, 35mm is just a bit long for a "normal" lens on DX, and I usually want a bit more working space than I'd like at 35mm. In this respect I prefer the Sigma - although Nikon's 28mm f/2.8 is another, very inexpensive, alternative.
Final note: This is an honest review of a lens I've actually owned and used, in comparison with other lenses that I've actually owned and used. Unfortunately, there are always people who click "negative" reviews as unhelpful no matter how accurate the review, and that does a dis-service to other Amazon customers as those reviews wind up at the bottom where they are not seen. I wish more honestly critical reviews were available to help me make purchasing decisions, and I hope you think so as well.
Other Lenses:
I've had the opportunity to own and use many different Nikon lenses and have posted my impressions of some of them here on Amazon. For those interested, here are short summaries. I have used all these lenses on Nikon DX-sized DSLRs, most recently my current D90. Refer to the full reviews for further detail.
Nikon 28mm f/2.8 AF-D: *** Competent, sharp lens is a good fit as a bargain DX "normal" prime. Slow f/2.8 max aperture poor. Very inexpensive in used market.
Nikon 35mm f/1.8 AF-G: ****1/2 Terrific lens at a bargain price. Not without flaws, but excellent in all important respects. A pleasure to use.
Nikon 35mm f/2 AF-D: **** Sharp, especially at large apertures, moderate contrast. Classic "normal" lens for DX but consider new 35mm f/1.8 AF-S instead.
Nikon 50mm f/1.8 AF-D: *** My sample was unacceptably poor at large apertures. Perhaps a below-average sample. Focal length not ideally suited to DX.
Nikon 85mm f/1.8 AF-D ****1/2 Very good short-to-moderate telephoto on DX. Acceptable at large apertures, very sharp stopped-down, moderate contrast. Potentially excellent for portrait use.
Nikon 16-85mm VR ***** Very sharp at all settings, excellent contrast, very useful zoom range including true wide-angle at 16mm. Excellent VR. Best-kept secret for DX users.
Nikon 28-200mm AF-G *** Of two samples, one was excellent and one poor, so watch for sample variations. Very good contrast. Not ideal hand-held due to lack of VR. Not ideal for tripod use due to design.
Nikon 55-200mm VR **** Very good lens, very good sharpness and contrast, no fatal flaws. Cheap feel and feature-challenged, but has effective VR. A bargain.
Nikon 70-300mm VR *** My sample had very poor performance above 200mm, good to very good elsewhere. Good contrast, generally very good focus performance. Good sports/action lens. Not good where critical sharpness is desired. Possibly a below-average sample.』 『This large aperture 30mm F1.4 EX DC HSM lens is designed to match the APS-C size image sensors of digital SLR cameras. Two SLD glass elements are especially effective in the compensation of magnification chromatic aberration.Glass mold aspherical lens at rear group of lens reduces color aberration and provides high-quality image results. From 40cm (15.7'') minimum focusing distance to infinity, this lens creates very sharp images with high contrast.The HSM models provide quiet high-speed auto-focus shooting, as well as full-time manual focus. Large Maximum Aperture of F1.4 can perform superbly in a great range of applications, including snapshots, portraiture, indoor shooting and landscape photography.』 『Designed to match the APS-C size image sensors of Canon digital SLR cameras, the Sigma 30mm f/1.4 lens is an ideal choice for a wide range of applications, including snapshots, portraiture, indoor shooting, and landscape photography. The 30mm lens relies on two special-low-dispersion glass elements and a glass-mold aspherical lens. Combined, the construction details correct for all types of chromatic and color aberrations. The lens is also equipped with a Hyper Sonic Motor (HSM) that supports quiet, high-speed autofocus, but also turns off should you prefer full-time manual focusing. Other features include a maximum aperture of f/1.4, a 62mm filter mount, and a one-year warranty.
Specifications
Focal length: 30mm
Maximum aperture: f/1.4
Lens construction: 7 elements in 7 groups
Angle of view: 45 degrees (SD format)
Number of diaphragm blades: 8
Minimum aperture: f/16
Minimum focusing distance: 15.7 inches
Maximum magnification: 1:10.4
Filter size: 62mm
Corresponding AF mounts: Canon
Dimensions: 2.97 inches in diameter and 2.3 inches long
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