Canon EF 20mm f/2.8 USM Wide Angle Lens for Canon SLR Cameras

Review Canon EF 20mm f/2.8 USM Wide Angle Lens for Canon SLR Cameras

Buy Cheap Canon EF 20mm f/2.8 USM Wide Angle Lens for Canon SLR Cameras From Here Now!
20mm wide angle lens for Canon cameras
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Technical Details

- EF mount; wide-angle lens
- Floating system; inner focusing; full-time manual focus
- 20mm focal length
- f/2.8 maximum aperture
- Ring-type UltraSonic Motor (USM)
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 "Great Lens for low light and fast" 2010-01-12
By Risch (Orlando FL)
I use this on my 40D, was not impressed with the previous reviews but needed a 20mm so went ahead and pushed the button. Picture quality was stunning at the amazingly low lights and the lens was super fast. excellent built quality. A great buy for an ultra wide angle.

 "bad lens" 2009-08-12
By Otto Haring (Miami)
I used it to shoot from an elevated angle. The result were disappointing.....I paid $[...] but I don't think it is even worth more than $[...] to tell you the truth.

The colors are lifeless, "burnt-out". There are no details on the images. You can see the samples on my site: [...] Look for the huge house with the red roof. You will see what I am talking about. Normally, I use the 17-40 L on my elevated system. I thoguht the 20mm would be a good replacement even if it not as good as the 17 40. I think even the 18-55 Canon kit lens produces better images. Add a few hundred bucks and buy a decent lens.

 "Lens" 2008-08-09
By Alice Herden (Florida)
Always happy with Canon Lenses.. I am more a detailed photographer, I purchased this mainly for my husband. He enjoys taking more landscape photography. Overall, very happy!

 "Great, versitile lens" 2008-07-14
By John Koehn (Arlington, VA)
I was a bit concerned at first with the fixed focal length, but it has proven to be very versatile. It takes very sharp pictures, even when fully opened in low light. I have not noticed any of the vignetting that other users have mentioned.



Bottom line: great wide angle lens for the price. Useful for landscapes and tight space, low light situations.

 "disappointing, especially for a fixed lens" 2008-03-03
By Neurasthenic (New York City, New York)
This is one of the first two lenses I bought when I switched to a Canon SLR about five years ago. I've had plenty of opportunity to use it since then, both with film and (full frame) digital.



The idea behind this lens is a good one -- 20mm is wide enough to allow for landscape and architectural photos, and it focuses close enough for entertaining photos of people's faces, taken about a foot away from their noses (note that you'll need either a ring light or lucky ambient light to pull off the latter). There is some pincushion distortion, but nobody would accuse the results of looking like a funhouse mirror, as would be the case with a fisheye lens, for example.



f2.8 is fast enough; I've no complaints there. Unfortunately, this camera consistently vignettes -- the corners of every image are dim. This is true even with a bare lens, and filters make it worse. You can correct the problem in image editing software, or just crop the image, but what's the point of buying a 20mm lens if you're going to have to crop every photo you take with it?



If this had been a cheap zoom lens, I'd have expected the problem and not been bothered by it. With a fixed lens, however, I think there isn't much excuse.



Canon still charges about the same ($400) that I paid for this lens years ago. By now, they ought to have upgraded this thing, or dropped the price. It is the worst EF lens I own.





-- addendum: I've recently been using a Canon EOS IX, which takes APS film. This lens is much more useful with that camera, though using even APS-H, you get something akin to the image you would get from a 35mm lens on a 35mm negative.


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Buy Canon EF 20mm f/2.8 USM Wide Angle Lens for Canon SLR Cameras Now
Buy Canon EF 20mm f/2.8 USM Wide Angle Lens for Canon SLR Cameras |
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Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras

Review Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras

Buy Cheap Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras From Here Now!
18-250mm f/3.5-6.3 Di II LD Aspherical (IF) Macro Tamron zoom lens with 35mm equivalent of 28-388mm * compatible only with Canon digital SLR cameras with APS-C (24mm x 16mm or smaller) image sensors -- not compatible with the Canon EOS 5D * advanced optical design with low-dispersion and hybrid aspherical glass elements for superior image quality * internal focusing * zoom lock mechanism to prevent unwanted barrel extension when carrying lens/camera combination * minimum focus distance: 17.7 in. * attachment/filter size: 62mm *
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Technical Details

- 18-250mm zoom lens with f/3.5-6.3 maximum aperture for Canon digital SLR cameras
- Offers telephoto capabilities of 28-388mm (35mm equivalent) in a single compact housing
- Low-dispersion (LD) glass eliminates chromatic aberration and sharpens ultra-long shots
- Maximum magnification ratio of 1:3.5 for macro shots; minimizes ghosting and flare
- Measures 2.9 inches in diameter and 3.3 inches long; weighs 15.2 ounces
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 "All-in-one zoom lens." 2010-01-24
By caldwin (Nashville, TN USA)
I have a Canon Rebel XTi digital camera and also a Sony DSC-H7

with a 15X optical zoom. For travel pictures I have always used

the Sony because it didn't require all the extra lenses. This

Tamron lens gives me the zoom range I need (14X) with the Canon

without having to take along a lot of other lenses.





[[ASIN:B000IBLMHQ Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical

(IF) Macro Zoom Lens for Canon Digital SLR Cameras]]

 "Depends what you are looking for..." 2010-01-04
By Jephu (NJ, USA)
Is this a good lens? Yes. Is it right for you? It depends.



If you plan to do a fair amount of *outdoor* travel and want to zoom without swapping lenses, this lens is probably right for you. Why?

- This lens is much lighter than lenses with VR/OS (vibration reduction/optical zoom). If most of your shooting is outdoors, then you probably need a light lens more than you need VR/OS.

- The photo quality is good when zooming, as long as you have enough light to use a high shutter speed.

- I've found the focus to be relatively fast and quiet, which is nice when you are taking photos on the go.

- This lens is really dropping in price, so you'll save some bucks while still getting a good quality lens.



If you plan to shoot indoors or want to take the best pictures possible, this is probably not the best lens for you. Why?

- If you are traveling and want to take pictures indoors, consider going for a lens with an f stop of 1.8 or lower or at least getting a lens with VR/OS. The f stop only goes down 3.5 on this lens, and gets higher when you start to zoom.

- If you want to take the best picture possible and you are traveling and don't care about the weight, get a lens with VR/OS. This will help take clear picture when you zoom or are dealing with overcast.

- If you are not traveling and have all the time in the world, why not get a nice 50-200 zoom and just swap it in as necessary. You can get one that is a better quality and cheeper than this lens.



Hope that helps!

 "Great Lens, Super Convenient, A Little Slow" 2009-11-23
By D. Patterson (Northfield, MN United States)
I love this lens, it was a Christmas gift last year. My only complaint is that my batteries SEEM to drain a little faster with it, and it focuses and takes photos a little slower than the original 18-55 lens. I also have a 75-300 lens. This lens is the best for general use, since I never have to switch anything or carry anything extra. I am not a professional, just an amateur that takes thousands of photos a year. With two little kids in tow, the convenience and versatility of this lens cannot be beat!

 "Some trade-offs, but overall a good all-in-one lens" 2009-10-02
By DRC (Austin, TX United States)
In the 18-55mm range, I find that this lens mostly performs like the Canon EF-S 18-55mm that came with my Digital Rebel kit. It definitely has compromises, though, which were necessary to get the 13.8x zoom range into a single lens. The Tamron 18-250mm vignettes generally on f/4 and wider when you're at the wide angle end of the zoom range. The vignetting can be compensated for in Photoshop, but it becomes worse when a filter is attached. I have to be really careful if I use a polarizer to keep the aperture narrower than f/4. The sharpness at the far end of the telephoto range isn't the best, either. This article goes into that in some detail, comparing it to a Canon professional telephoto lens:



[...]

Generally, they're comparable at the center of the image, but the Tamron sharpness falls off significantly toward the corners when used at the telephoto end of the zoom range. This matches my observations.



As with all non-stabilized telephoto lenses, you really need a fast shutter speed to overcome camera shake at the far end of the telephoto range. I find that 1/320s or faster is generally adequate with this lens, but due to the narrow aperture requirement (f/6.3) at 250mm, it means that you really need a lot of light to take an effective telephoto shot at ISO 100. Since I take mostly landscapes, that's not normally an issue. If I were more into wildlife or people photography, however, it definitely would be.



[...]



I compared it specifically with this review of the EF-S 18-55 to convince myself that I wouldn't be losing any quality or functionality at the wide angle end of the zoom:

[...]



I'm not sure if I agree with their vignetting tests, though. I personally think the vignetting is worse with the Tamron.



All in all, the Tamron 18-250mm lens is a good travel lens and is an excellent choice for the back country, where weight is a major issue but a 3x zoom just won't capture everything you want. It takes great shots up to about the 150mm range and OK shots beyond this (tripod strongly recommended for 200mm and above.) I've taken great candid portraits and wildlife photos with it, although neither is really this lens' strength. In general, it's not going to give you the same results as a professional lens, but for those who need to travel light, it would be hard to find a better lens for the same weight.

 "LOVE IT! LOVE IT! LOVE IT!" 2009-09-10
By Another Shopper (San Diego, CA)
I am so happy with this lens. It is everything I need all in one handy little package. Great for everyday shots at 18mm, then extends to fabulous zoom capability at 250 mm. It is only slightly less a lens than my Canon 300mm, but so much easier to have on my camera.



Images are sharp, crisp and clear. I don't know when I'll need to get another lens!


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Buy Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras Now
Buy Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras |
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