『The addition of a lens hood can help prevent flares--those circles of light that can accompany images where a strong light source is just outside the fame. These type of lens flares occur when indirect light rays pass through the front lens elements but don't make it all the way through to the image sensor. Opteka's ES-71II Lens Hood is designed for the Canon EF 50mm f/1.4 USM SLR Lens. Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. This dedicated lens hood is designed to match the specific focal length of the lens it was designed for.』
タイトル『 Computar TG4Z2813FCS-IR 0.33-Inch Varifocal lens 2.8-12mm F1.3 Auto Iris DC Drive Day/Night Infrared >
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price：$32.62
CBC America
Usually ships in 24 hours 『TG4Z2813FCS-IR lens is a 2.8 to 12mm varifocal lens. Focal length adjustments can be made with a turn of the dial, virtually eliminating the cost and inventory problems associated with improper monofocal lens selection. This lens is a CS-Mount, comprised of all glass optics, come with locking setscrews and a durable metal barrel and mount, and are covered by a three year warranty. Aspherical optics provide excellent low light sensitivity. Infrared Lenses are designed for use with Day/Night cameras. They eliminate focus shift in night mode, especially in the presence of IR lighting.』 タイトル『 Computar TG3Z2910FCS-31 0.33-Inch Varifocal lens 2.9-8.2mm F1.0 Auto Iris DC Drive >
Core2Duoノートレビュー 's review (Works, but someone could do this better.) 『I use the built-in flash on my Pentax K10D to control my off-camera Metz 48 AF-1. The K10D can do this with the built-in flash either only controlling or also contributing to the exposure. For the second case, it's nice to have better light quality than the direct glare of the built-in flash, which is where this comes in.
And for that, it works very well -- doesn't interfere with the wireless optical communication and makes the built-in flash deliver a bit of diffused but on-axis light. Results when using it on the built-in flash alone are less stellar, but a marked improvement over not having the device. Either way, P-TTL metering works fine and exposure is good.
I had been using a homemade origami construction, which also worked okay, but it was always a pain to make it stay in the right place. This is much better.
A major downside is that it's constructed in a way that doesn't really fold flat, and the little arm snaps to the diffuser in a way which is clearly not meant for repeated disassembly and reassembly. I don't think it would have been hard or expensive for Sto-Fen to have made this connection better. And really, we're talking about 30¢ piece of plastic snapped to a 20¢ piece of plastic: for the $17 retail price I think they could have spared a little more for a better connection.
Also, it must be said, it looks pretty dorky -- like a gimmick, not "professional" equipment. 』 『The Omni-Flip is designed to slip into the flash shoe on top of the DSLR's. Will fit all standard flash shoes - including the Nikon D40,D40x,D50,D70,D70s,D80,D 100&D200 - except the Minolta and Sony DSLR's The Omni-Flip creates a Diffused Bare Bulb Effect. Giving even coverage across the entire frame.』
price：$24.77
PowerGenix
Usually ships in 24 hours Core2Duoノートレビュー 's review (Excellent Performance) 『I've been using these in my 580 EX flash and have had excellent results. Compared to the Ni-MH batteries I have been using, these batteries recharge faster and last longer.』
(Powers Things Longer than NiMh AA's) 『I've been using these new nickel-zinc AA cells for about 2 months now. I'm impressed by how long they will power things compared to the usual NiMh cells.
I have a Magellan GPS unit that uses 2 AA's. It was probably designed for alkaline cells. New alkaline cells give a full scale battery bargraph, but freshly charged NiMh cells only make the bargraph hit about 80%. NiMh cells drop to about half scale after an hour. I only get about 4 hours with NiMh cells before the voltage drops too low and it turns itself off. Alkalines will last about 7 hours. The new PowerGenix NiZn cells give a full scale battery bargraph for about 3-1/2 hours, then it slowly drops until the unit turns off. My first test powered the GPS for 6 hours and 20 minutes, the second time it went 6 hours and 55 minutes. I left the batteries in the charger longer the second time I charged them, about 4 hours instead of 2. With my GPS, the PowerGenix AA's lasted almost twice as long as 2200mAh NiMh.
I have also used these in my Fuji digital camera that uses 2 AA's. They also last a long time, longer than the NiMh cells I have used in the past. The LCD display is also just a little brighter with the NiZn cells.
I have a little Grundig G6 radio that also uses 2 AA's. It won't turn on with these installed. I'm guessing that the radio is sensing the higher than usual voltage (about 3.6 volts) and won't power up. This is the only device I have found so far that isn't happy with the NiZn cells.
When these come out of the charger, they read about 1.82 volts without a load using my Fluke DMM. Of course the voltage will drop when current is drawn and as the battery discharges.
To sum it up, these cells act a lot more like alkaline cells with the higher voltage available. It takes a lot longer for the voltage to drop down to about 1.2 volts per cell when comparing to NiMh types. These start off at a higher voltage than alkaline and take a good long time to drop to the point when you need to recharge.
Give these a try, I think you'll be happy. I'll be buying more AA's and some of the AAA size when they are available.』
(Great in Digital Camera, childrens computer and flashlights) 『Alkaline batteries are wasteful and just don't last long. NIMH and NICD don't have the needed voltage to run some of my devices, like my Olympus FE110 camera. Alkaline batteries go for about 50 pitures, CRV3 Lithium Ion don't fit in the camera battery compartment, and Fully charged NIMH, even eneloops show up in the camera as weak and only allow a couple of pictures before turning off. My alternative has been to buy the expensive non-rechargeable Lithiums. Functionally this works great but it is expensive and wasteful of resource.
The new Power Genics AA ZiNc batteries work great in every application I have tried them in. I've not had them long enough to know if they suffer from the discharge problem that NIMHs do, but I've had no problems of the slightly higher voltage causing any issues with my equipment. It's awesome to finally have a solution for our battery hungry FE110 camera. I can't wait for AAA's to come out!』
(Good batteries by PowerGenix) 『I use many different types of rechargeable batteries, trying new technologies as they became available. I really appreciate the advancements in these NiZn rechargeables. They are higher voltage and environmentally responsible...and I've only charges them twice, but they seem to hold a charge well after a pretty short charge cycle. I'll be buying more of them.』
(Much better than eneloop) 『I tried these in my power-hungry flash and they work great!! I used to go through sooo many alkaline batteries and then switched to eneloops but found myself charging them more than I liked. I just throw my PowerGenix in and go and then when it came to charging just a little over an hour was enough to get them ready to go again!You also will notice they are are lighter in weight than other batteries and made of more sustainable products, better for the planet!! Why NiZn? (Nickle Zinc) About Nickel-Nickel has many uses from construction materials to food preparation, but its many favorable characteristics make it an excellent choice in the use of high powered rechargeable batteries. For more information on nickel, its many uses and its metallurgical properties, visit the Nickel Institute.
Zinc Facts-Zinc's unique properties allow it to be used in an array of products from cosmetics, to baby powder, to precision parts for automobiles, airplanes and appliances. The International Zinc Association notes that one of the most useful characteristics of zinc is its resistance to atmospheric corrosion.
Recyclability-More than 6.5 million metric tons of zinc slab, oxides, powders and dusts are consumed each year in the Western World, two million of which come from recycled zinc. In the United States, the Bureau of Mines estimates that with enhanced recovery, recycled zinc will ultimately account for more than 40% of the total amount of zinc used
Meanwhile, nickel's resistance to corrosion means that when most nickel-containing products are eventually discarded, they are still intact and easily identifiable (e.g., a kitchen sink made of stainless steel). This aids in the collection and sorting of nickel-containing products for recycling.
Sustainability-While abundant, both nickel and zinc are finite resources. However, their innate characteristics and recyclability assure environmentally sensitive availability for long-term development. Unlike many other materials nickel and zinc can be recycled again and again while maintaining their physical and chemical properties. There remains the same amount of each element at the end of a particular product cycle as at the beginning.
Getting ready to try them in my electronic gopher and mole mover devise!...great product !』 『PowerGenix 1HR ZiNc 4 Position Charger Kit with 4 High Voltage1.6v 2500 mWh Nickel Zinc Rechargeble batteries』
『Nikon 35mm f/1.8G AF-S DX Lens: # Fast, f/1.8 prime lens is perfect for low-light conditions, travel, environmental portrait and general photography.
# Engineered for Nikon DX-format D-SLRS, the AF-S DX Nikkor 35mm f/1.8G lens renders a picture angle approximating the classic normal angle of view of a 50mm lens on a Nikon FXformat digital SLR or 35mm film camera.# Aspherical lens element minimizes coma and other types of lens aberrations, further improving image integrity.
# Nikon Super Integrated Coating (SIC) enhances light transmission efficiency and offers color consistency and reduced flare.
# Exclusive Nikon Silent Wave Motor (SWM) enables fast, accurate and quiet autofocus.# Close focusing to 1 foot for creative perspectives and versatility.
# Rounded 7-blade diaphragm opening makes out-of-focus elements appear more natural. ++PLUS++Accessory Kit:3 pc Filter Kit: Includes: UV filter, Polarizing filter, Fluorescent correction filter&Filter case - Tamrac Medium zipper closing foam padded lens case W/Belt Loop - Lens Pen Cleaning Tool - Professional Dust Blower - Cap Keeper Front Lens Cap Leash - Advanced Micro Fiber Cleaning Cloth.』
price：$13.99
Pyle
Usually ships in 24 hours Core2Duoノートレビュー 's review (Get what you pay for) 『This product works ok. The problem with it is that a standard Decora cover doesn't fit. As a standalone its ok but if you are using more items in the same box and have to use a multiple gang plate this unit is too large to fit standardized decora plates. It leaves an ugly finished product. I wouldn't order it again because most of the time I have something else coming out of that same location.』 『HDMI one Jack Wall Plate Feed-Thru HDMI Wall Plate; Designed For In-Wall HDMI Cable Routing For Commercial Or Residential; Suitable For Home Theater Hi-Def Installs; High Impact ABS Plastic; Delivers High-Bandwidth, Uncompressed Video And Multi-Channel Di』
price：$499.00
Sigma Corporation
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. Core2Duoノートレビュー 's review (big, bulky, but sweet) 『I'm comparing this with the old nikon 50mm f1.4.
The first thing that jumps out if the size difference. The sigma is huge compared to the nikon. The sigma boosts a 77mm front filter thread size, which is pretty massive. The build quality seem decent. Nothing compared to new nikon's f2.8, but seems sturdy enough. The zoom action is smooth, but nothing to write home about. The zoom speed is a little finicky, but fast enough. Finicky in that sometimes in low light, it seems to get confused, more so than the nikon's. (only slightly).
The sharpness is quite amazing. I believe this is equally sharp to the nikon, and the brokeh is slighly better. (marginally).
The front lens hood is pretty useless and I shoot with that off.
Why choose this over the nikon? The pictures it produces seem to have a little more oomph. There seems to be a slightly high ratio of winners, those shots which are just magical, with the sigma. This comes at a cost of... higher price, and huge bulk. 』
(Not too heavy, no focus problems) 『I bought the Sigma 50mm F1.4 EX DG HSM Canon Version, paying full price without any sort of quibbling, on Nov 9, 2009. My philosophy is that since I bought this way I can expect the best support if needed. Turns out, I wish I hadn't waited so long to buy one!
I also got a Sigma 77mm DG UV filter to protect the front surface of the lens (also paying full price without quibbling). A side-comment about the Sigma filter: I noticed right away that the Sigma coatings on this filter are far better than the coatings on the Sunpak Sun 77 UV filter I had been using: a very deep look to the surface, indicating few if any reflections.
My camera is a Canon EOS 30D, which has the APS-C sensor (not full-frame). Fully expecting to send in the camera and lens for fine-tuning by Sigma, I tried a few simple focus tests at full f1.4 aperture. No problems! In fact, my best manual focusing was only equal to the autofocus results. If anything can be said to confirm focus problems reported by others, I would have to say that automatically and manually I got focus very slightly in front of the focus point, by an inch or two at a distance of 6 feet. This seems to be adequately within the depth-of-field of the lens at f1.4, and is as good as I have ever gotten with my other lenses. Focus at infinity seems just fine to me, at least with the particular Sigma lens I received.
On the downside, I noticed a small but practically insignificant variation in the autofocus results: I defocused manually, then refocused automatically, took a shot, and repeated a few times. I saw very slight variations shot to shot, but this is not a show stopper by any means. My guess is that I will see this variation in most any lens, but of course I haven't yet tried it on my other lenses. I think it has to do with how quickly focus movement ceases in the lens after correct focus is obtained (a matter of damping in the lens perhaps).
All of my tests were with the lens wide open since this will be the way I use it most of the time. For my tests, however, I also used a tripod for maximum camera stability, and I used the mirror lockup option so camera vibration would be minimal during the exposure. My best focus test was shooting an open matchbook on a piece of chicken wire, at an angle. The chicken wire showed clearly the limits of depth-of-field, and made it easy to see the center of focus.
My previous favorite lens was the Canon EF 24mm f1.4L USM (older model, not the new "II" version currently in the Canon product lineup). This is also a lens with a 77mm filter requirement, but 1/2" longer, twice the cost, and quite a bit heavier than the Sigma. I was surprised to find this Sigma lens so small and light by comparison! Based on the other reviews stating how surprised others were by the size and weight of the Sigma, I expected at least something as heavy as my Canon lens. Oops!
The nice thing about a heavy lens is that it sort of stabilizes the camera during the shot, when the SLR mirror flips up and down. With a "long" lens (the Sigma is about twice as long as my Canon 24mm) you need this stability even more, so in my opinion the Sigma lens is not heavy enough!
If you enjoy available-light photography, I think you will be delighted with this lens!』
(Not perfect... but excellent prime lens) 『I'm a photo hobbyist who likes to do my research. I purchased this lens 8 months ago and it produces great creamy bokeh when you're after shallow DOF. Solid construction, smooth matte finish. The AF is not dead-on and sometimes lingers, but that's what you can expect from the rebel's AF system. Manual focus + liveview fixes this. I never shoot wider than f1.8. At f1.4 the blooming is off the charts and you can't get any remotely sharp images. I got this lens to use with my APS-C camera as well with a prospective FF camera. Overall not perfect, but still one of my favorite lenses.』
(Sigma 50 mm vs Canon 50 mm F1.4) 『I had both Canon and Sigma 50mm F1.4. Both lens perform equally well over F2.0. However, the major usage of this lens is at F1.4. At F1.4, Sigma beats canon easily in terms of sharpness, bokeh, saturation and contrast. The build quality of Sigma is obviously much better than Canon's.
At F1.4, both lenses have front or back focus problem with different cameras. If used on Canon 5D II, it can be adjusted using AF microadjustment or sent back to the service centres for adjustment pertaining to that camera.』
(Thinking about Canon 50mm options) 『If you're looking at this, then you've probably decided on a 50mm or so prime lens, likely because the kit zoom lens is both slow and not very good quality. Here are the options for Canon:
Canon 50mm f/1.8 (version 2): It's inexpensive, very fast compared to any cheap zoom and exceptionally good for the price. On the down side, it's cheap feeling, noisy in focusing, and difficult to focus manually. You should buy at least this.
Canon 50mm f/1.4: A little bit faster, but that's a less important trait these days with good digital high effective ISOs. More importantly, it's robust, easy to use, with full-time manual focusing (you can just grab the ring even when it's autofocusing), and good image quality
Sigma 50mm f/1.4: More expensive than the Canon lens, but slightly better image quality wide open. It's a tough sell since the quality change isn't huge. But if the extra money and Sigma logo don't bother you, then go for it.
Canon 50mm f/1.2: Big money for that extra light-gathering ability. If you need this for photographing in a club, then you'll buy it. If you don't need it, it's too expensive and heavy to compete with the lenses above.
Another, used, option, the original Canon 50mm f/1.8 EF lens was sturdier and better built, but they're only available used and possibly abused. I own one and am happy with it. I have shot with the Canon f/1.4 as well and that's the lens that I'd buy today.』 『L9) 50MM F1.4EX F/CAN HG HSM LENS』
The scallop of large satisfactory ! northern countries and - [ of how much ] botan shrimp are ! tightly.
getting to know the technique of motorbike expensive sale -- Ta -- if -- -
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