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Canon EF 20mm f/2.8 USM Wide-Angle Fixed Lens

4.2 out of 5 stars 42 customer reviews
| 12 answered questions

Price: $539.00 & FREE Shipping
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  • Focal length and maximum aperture: 20mm 1:2.8
  • Lens construction: 11 elements in 9 groups
  • Diagonal angle of view: 94 Degree
  • Rear focusing system with USM focus adjustment
  • Closest focusing distance: 0.20m/0.66 ft.
  • EF mount; wide-angle lens
  • Floating system; inner focusing; full-time manual focus
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12 new from $539.00 26 used from $199.99 2 refurbished from $419.00

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Lens Compatibility Information: Canon EF-S lenses are only compatible with APS-C sensor DSLR cameras. Canon EF lenses are compatible with Canon full-frame and APS-C DSLR cameras.


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This item: Canon EF 20mm f/2.8 USM Wide-Angle Fixed Lens
Customer Rating 4 out of 5 stars (42) 4 out of 5 stars (476) 5 out of 5 stars (918) 4 out of 5 stars (422)
Price $539.00 $149.00 $125.00 $279.00
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Adorama Camera Amazon.com Amazon.com Amazon.com
Compatible Mountings Canon EF Canon EF-S Canon EF Canon EF-S
Dimensions 3.07 inches x 2.8 inches x 3.07 inches 2.68 inches x 0.91 inches x 2.68 inches 2.72 inches x 1.54 inches x 2.72 inches 2.95 inches x 2.83 inches x 2.95 inches
Item Weight 0.89 pounds 0.28 pounds 0.35 pounds 0.53 pounds
Lens wide-angle Prime lens Prime lens wide-angle
Maximum Aperture 2.8 Information not provided 5.6 f 4.5 f
Max Focal Length 20 24 mm 50 mm 18 mm
Min Aperture 22 22 22 29
Min Focal Length 20 mm 24 mm 50 mm 10 mm
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Product Description

Product Description

The Canon EF 20mm f/2.8 USM is an ultra wide-angle lens for serious applications. Plus it’s easy to hold and carry at 14.3 oz. (405g). A floating rear focusing system gives sharp images at all subject distances and an ultrasonic motor (USM) enables fast, smooth and quiet autofocus. Full-time manual focus override allows for precise manual focus even when in AF mode. The minimum focus distance is 9.8 inches.

From the Manufacturer

Wide-angle lenses let you capture more of the image by broadening the angle of view and increasing the depth of field, thereby bringing more of the area into focus. The lenses also provide a unique perspective by expanding the apparent distance between the foreground and the background. This Canon 20mm f/2.8 is no exception, with such additional features as a floating rear focusing system with an Ultra Sonic Motor (USM), a 0.8-foot close focusing distance, and a 94-degree diagonal angle of view. As with all Canon lenses, the 20mm lens carries a one-year warranty.

Specifications

  • Focal length: 20mm
  • Maximum aperture: f/2.8
  • Lens construction: 11 elements in 9 groups
  • Angle of view: 94 degrees
  • Focus adjustment: Rear focusing system with USM
  • Close focusing distance: 0.8 feet
  • Filter size: 72mm
  • Corresponding mounts: Canon
  • Dimensions: 3.1 inches in diameter and 2.8 inches long
  • Weight: 14.3 ounces
  • Warranty: 1 year
Ultra-wide-angle lens for serious applications. Easy to hold and carry at 14.3 oz. (405g). Floating rear focusing system. Sharp images are obtained at all subject distances.

The optical performance, fast f/2.8 speed and ultra-wide-angle coverage make this a great choice for many applications, like interiors, scenics, travel and photojournalism. It uses a "floating" optical system for excellent sharpness even at its minimum focusing distance of under 10 inches (0.25m), and with a ring-type USM and full-time manual focusing capability, offers the speed and handling pros expect.

Wide and Fast
If you need an ultra-wide angle and a large aperture, one of the following lenses will fit the bill. Ultra-wide-angle lenses can capture scenes beyond your natural field of vision. The EF 15mm f/2.8 Fisheye, the widest of them all, has a 180∞ angle of view. For more normal-looking wide-angle shots, there are longer wide-angle lenses up to 35mm with the maximum aperture you need.


Product Information

Product Dimensions 2.8 x 3.1 x 3.1 inches
Item Weight 14.2 ounces
Shipping Weight 1.3 pounds (View shipping rates and policies)
ASIN B00007GQLT
Item model number 2509A003
Customer Reviews
4.2 out of 5 stars 42 customer reviews

4.2 out of 5 stars
Best Sellers Rank #196 in Camera & Photo > Lenses > Camera Lenses > Digital Camera Lenses
Date first available at Amazon.com November 14, 2002

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Customer Reviews

Top Customer Reviews

By Trevis Rothwell on August 2, 2006
I've used this lens both on 1.6x crop (Digital Rebel XT) and full frame (5D and EOS 3) cameras.

On the 1.6x crop, the 20mm focal length looks like 32mm. I personally find that to be a wonderful focal length for general purpose use, and the f2.8 is acceptably fast for some indoor / low-light situations.

On full-frame, the lens is amazingly wide, and can be challenging to frame an interesting picture. Nevertheless, sometimes you need the lens to be that wide, so it's great to have. On the downside, the lens loses sharpness toward the edges, and is more evident on full-frame cameras than on 1.6 crop cameras.

This lack of sharpness is not always a big deal, as the edges of a photo are usually not the focal point.

I'm overall happy with it, and when I want wide, I usually grab my 20mm over my 17-40mm zoom.
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If there is one thing in this universe that is more rare than gold, it is a positive review of this particular lens. Now I don't know if I just got lucky and got a good sample. But this has been a GREAT lens for me. Sharpness is actually REALLY good. Now one of the BIG complaints of this lens is poor edge sharpness. But I have not found this to be a severe problem - especially when stopped down somewhat. And, since a lens of this focal length is more likely to be used for scenics or arcitectural use than action shots, this isn't the end of the world.

But there is more going for this lens than sharpness. Distortions are VERY low for a lens of this focal length. You are NOT going to get anything nearly as good from a zoom. Also, color saturation and contrast are EXCELLENT - FAR better than, say, an EF-S 17-85mm lens. Colors REALLY come alive with this lens compared to most zooms. And chromatic aberrations are all but non-existant.

Construction also seems to be solid on my lens. The materials seem to be of good quality. The focus ring doesn't wobble much. And nothing external actually extends during focusing. This last fact is a REAL plus in outdoor environments, since an extending element creates low pressure in the lens (which can suck in dusty air).

I really have only two complaints about this lens. One it the price, which is somewhat on the high side. I personally got mine used for less. But $400+ is kind of alot to pay for a consumer grade lens. On the other hand, price is maybe not too bad, given the good overall quality of this lens. My other complaint is vignetting at large apertures. Simply put, vignetting is VERY noticeable at f/2.8 - even on an APS-C camera. I can only imagine how it might look on a full-frame camera.
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If you want a wide-angle lens for a Rebel that doesn't have lots of distortion, this is great. I have taken some very nice shots with this hand-held indoors and outside. The first time I took a stopped-down shot indoors on a tripod, I was really impressed. Because of the crop factor and depth of field, it's eye-popping sharp all over with great color saturation. It costs a good amount, but it's one of the most useful lenses I have.

Drawbacks - A chunk of that price is for the 20mm optics of which we only see the central portion with a cropped sensor. The lens hood is extra. The lens diameter is 72mm so buying a polarizer lens will set you back.

Bottom line: I would give up my 85mm f1.8 and 50mm f1.4 - and maybe even my 35mm f2 - before I would part with this lens. Great for landscapes on cropped sensor cameras. People who have complained about this lens must have gotten a bad build.
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That is the question with this lens. I was looking for a cheap and light wide angle for my gear bag that wouldn't make me cry if it was broken. I'm a wedding photographer, and so it is a little different for me when I go out shooting. I am not just taking photography gear with me, I am taking my livelihood . Cheap was the name of the game, but I knew I wanted a prime lens due to their quality, wide aperture and lack of bulk. I decided to rent this lens and give it a whirl, spending $40 for the week instead of $500 flat out. I am rather conflicted about this lens, as I will outline below. If you don't like reading long reviews, please skip to the conclusion!

TEST GEAR:
Canon EOS 1Ds Mark II 16.7MP Digital SLR Camera (Body Only) (Full frame camera)
Canon EOS 40D 10.1MP Digital SLR Camera (Body Only) (Cropped Sensor)
Canon A2E 35mm Camera Body (35mm Film)

PROS
- Can produce extremely sharp images from F/4+
- Build is decent, more solid than the 50mm 1.8
- Focus is fast and relatively quiet compared to zoom lenses
- Distortion (barrel primarily) is kept in check, better than most super-wides

NEUTRAL
- Color and contrast needs adjustment on most images

CONS
- As others have mentioned, images are soft around the edges
- Vignetting is VERY noticeable on full frame/film
- Seems to underexpose images (as also documented on The Digital Picture)

Here's the thing, this isn't an L series lens.
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