Canon Super Wide Angle EF 20mm f/2.8 USM Autofocus Lens

Model #2509A003

USA Version
Canon 2509a003 1
Canon 2509a003 1
Canon 2509a003 3
Canon 2509a003 5
Canon 2509a003 2
Canon 2509a003 4
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ON A BRAND NEW USA VERSION OF Canon 2509A003

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Specifications

Physical

Weight 14.29 oz (405 g)
Filter thread 72 mm
Dimensions (dxl) Approx. 3.1 x 2.8" (7.87 x 7.11 cm)

Performance

Maximum reproduction ratio 1:7.14
Camera mount type Canon EF
Aperture Maximum: f/2.8
Minimum: f/22
Magnification 0.14x
Minimum focus distance 9.84" (25 cm)
Groups/elements 9/11
Focal length 20 mm
Angle of view 94°
Diaphragm blades 5
Format compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)

Features

Autofocus Yes
Tripod collar No
Image stabilization No
Expert Reviews
Slr lens and camera reviews.33034498
31 May 2009

There are not that many (better) alternatives to Canon's EF 20mm f/2.8 USM that fall within the same price range and at the same time deliver superior performance. That might be the reason to seriously consider this lens for your ultra wide photographic needs, despite somewhat lackluster performance...

The phoblographer.34645560
8 October 2012

The Canon 20mm f/2.8 USM lens often catches a bad rap for being soft in the corners, having horrendous vignetting wide open, and being plagued with an overall lack of contrast. I’m here to tell you why absolutely none of that matters.

The digital picture.32823291
12 October 2007

Is the Canon EF 20mm f/2.8 USM Lens right for you? Learn all you need to know about the Canon EF 20mm f/2.8 USM Lens in The-Digital-Picture.com's review!

Photodo.33034400
29 June 2008

As a wide-angle lens for cropped sensors, this lens falls a little short, with virtually all of the standard zooms giving a wider angle of view. However, on the full frame sensors that Canon are now producing, this lens still warrants its place in their line-up.

  • +

    Good build and finish, Nice focal length on Full Frame cameras, Silent and fast autofocus., Good image quality

  • -

    Not that useful on cropped sensors., Stiff manual focus ring (on example tested), Distortion worse than on modern designs (minor point), Hood not included with lens

User Reviews
B h photo.32817553
18 September 2015
6.0/10

This lens is great as a wide and with an aperture going as low as 2.8 is amazing, however, when in low light and shooting at that low of an aperture, there will be a vignetting around your photos. Please be aware of that feature.

  • +

    Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight

  • -

    Poor in Low Light

Canon.33575661
30 August 2014
8.0/10

Short and simple. This lens is does exactly what I expected it to do - take great photos. One can get a balanced impression and make a judgment about this lens by reading all the reviews. It is made for the serious amateur, maybe not for the pro.

  • +

    Superior build quality

Adorama.32830004
12 July 2014
8.0/10

I did some test with this lens & it does what they said it will do.it's very sharp,& i got no vignetting whatsoever with my 5Dm3 body.

  • +

    Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh

Walmart.34443253
11 March 2015
10/10

I played around with wide and ultra-wide lenses over the years. The best lens for a full frame camera that I have found is this 20mm lens. It seems to be wide without exhibiting extreme distortion. The nice part if the field curvature works well taking photos of small rooms.

Office depot.34444728
11 March 2015
10/10

I played around with wide and ultra-wide lenses over the years. The best lens for a full frame camera that I have found is this 20mm lens. It seems to be wide without exhibiting extreme distortion. The nice part if the field curvature works well taking photos of small rooms.

Amazon.32817384
8 December 2014
10/10

Really good lens. One of my favorites. Haven't really been bothered by vignetting. For someone with not too much money to spend, this is a good buy.

Newegg.34207442
8 November 2009
10/10

Agree with the other reviewer RE crops. I'm using this on a trip and with a 7D @ 18MP I get fantastic 100% crops. This is a great landscape lens and I think a great buy if you can deal with primes.

  • +

    Sharpness, fast AF, color, contrast

  • -

    None

Photography review.32822891
3 September 2005
4.0/10

I bought this lens to get a bit wider than The 28-135mm IS which was my first lens for the new 10D. I liked the reasonable size and that I could share the 72mm filters with the 28-135IS. I am not happy with the sharpness of this lens at any f/stop and will not use it at all wide open.

  • +

    Low used price. I like the size and weight. I can share filters with my 28-135mm IS. I like the focal length.

  • -

    This lens is not as sharp as I expect from a prime and is not as sharp as the 17-40L that I replaced it with.

Product Highlights
  • EF Mount Lens
  • Aperture Range: f/2.8-22
  • Aspherical and Super UD Elements
  • Ultrasonic Autofocus Motor
  • Floating Rear Focusing System
  • Manual Focus Override
  • Metal Filter Ring and Lens Hood Mount
  • Truly Circular Diaphragm
  • Minimum Focus Distance: 9.8"
  • 72mm Filter Thread Diameter
5.3/10
Average Expert Score
8.7/10
Average User Score
In The Box
  • Canon EF 20mm f/2.8 USM Lens
  • E-72 II 72mm Lens Cap
  • Lens Dust Cap E (Rear)
  • Limited 1-Year Warranty
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