New! Video Chat Connect with a Photography Expert – Live

Canon EF 20mm f/2.8 USM Lens

BH #CA2028EF • MFR #2509A003
Canon EF 20mm f/2.8 USM Lens
Key Features
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/22
  • Four Aspherical Elements
  • Two Super UD Elements
Offering an impressively wide field of view, the EF 20mm f/2.8 USM from Canon is a well-corrected wide-angle prime also featuring a bright f/2.8 maximum aperture and sophisticated optical design. Four aspherical elements are featured, to limit spherical aberrations and distortion, and two Super UD elements are also used to reduce color fringing for greater clarity. A Super Spectra coating has been applied, too, in order to minimize flare and ghosting for improved contrast and color fidelity. Complementing the optical traits is a ring-type USM for quick and quiet autofocus performance, along with full-time manual focus override, and a floating rear focusing group helps to maintain consistent image quality throughout the focusing range.
No Longer Available
Trade in your gear for cash: Learn more

True Know-How

Ask Our Experts

800.606.6969

Canon EF 20mm f/2.8 USM Overview

Offering an impressively wide field of view, the EF 20mm f/2.8 USM from Canon is a well-corrected wide-angle prime also featuring a bright f/2.8 maximum aperture and sophisticated optical design. Four aspherical elements are featured, to limit spherical aberrations and distortion, and two Super UD elements are also used to reduce color fringing for greater clarity. A Super Spectra coating has been applied, too, in order to minimize flare and ghosting for improved contrast and color fidelity. Complementing the optical traits is a ring-type USM for quick and quiet autofocus performance, along with full-time manual focus override, and a floating rear focusing group helps to maintain consistent image quality throughout the focusing range.

Ultra-wide 20mm f/2.8 prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 32mm equivalent focal length.
Bright f/2.8 maximum aperture benefits working in low-light conditions and also permits working with shallow depth of field techniques.
Four aspherical elements limit distortion and spherical aberrations in order to realize greater sharpness and accurate rendering.
Two Super Ultra-Low Dispersion elements minimize color fringing and chromatic aberrations for high clarity and color accuracy.
Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
A ring-type Ultrasonic Motor (USM) is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
Floating rear focusing system maintains image quality throughout the focusing range.

Canon EF 20mm f/2.8 USM Specs

Focal Length20mm
Maximum Aperturef/2.8
Minimum Aperturef/22
Lens MountCanon EF
Lens Format CoverageFull-Frame
Angle of View94°
Minimum Focus Distance9.84" / 25 cm
Maximum Magnification0.14x
Optical Design11 Elements in 9 Groups
Diaphragm Blades5, Rounded
Focus TypeAutofocus
Image StabilizationNone
Filter Size72 mm (Front)
Dimensions (ø x L)3.05 x 2.78" / 77.47 x 70.61 mm
Weight14.29 oz / 405 g
Packaging Info
Package Weight1.28 lb
Box Dimensions (LxWxH)6.25 x 5.45 x 5.45"

Canon EF 20mm f/2.8 USM Reviews

Great lens for the money

By Nan
Rated 5 out of 5
Date: 2018-01-15

Great lens for the money. Im using it for interiors and it performs well!

Wonderful lens

By Bill of Chelsea
Rated 5 out of 5
Date: 2015-11-04

Using it mostly for video. Wide field of view, no no visible distortion. The edges wrap around when you pan, but this looks nice.

Soft Edges

By Anonymous
Rated 1 out of 5
Date: 2015-09-26

Extremely soft on edges, will return. Blow up image to 100% and you will see that edges are terrible. Used on Canon 5D MarkIII and tripod with cable release.

Decent lens as a back up.

By Chauder
Rated 3 out of 5
Date: 2015-09-18

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.

this is just what I needed for an upcoming solar eclipse tri

By Jackie
Rated 5 out of 5
Date: 2017-07-24

Band H is the best. The employees at so very knowledgeable and eager to assist you. Their delivery time in phenomenal. I am using this lens to photograph the milky way. In August I will use it in a trip to Wyoming to photograph the upcoming solar eclipse and the surrounding national parks. I will use it for both landscape an astrophotography. Wish I had had it on an aurora trip I took several years ago.

Great lens

By Anonymous
Rated 4 out of 5
Date: 2016-10-13

Using for video, time lapse, and still photography. Wish it had more cross type focusing points and lower F stop. 20mm is perfect for what I'm doing in my studio and is a great lens to have in my kit.

Great, Underrated lens!

By Alexander
Rated 4 out of 5
Date: 2016-03-31

There are a lot of bad reviews about this lens. It does have it's flaws, but overall it is great wide angle lens for the price. I was in the market for as wide of a lens as I could find around the $500 price mark. And this what I took a risk after reading multiple bad reviews. It has really harsh vignetting to it. Mainly more wide open aperatures. Although this is fixable in post pretty easily. It also soft on the edges any stop lower than f/3.5. Overall, would definitely recommend as a good wide, stopped down option. I've used it for weddings, landscape and general use when need of a wide and have great images come out of it paired with a 6D and 5Diii.

Useful lense

By Anonymous
Rated 4 out of 5
Date: 2016-03-20

i personally shoot on a Canon 60D which is jot a full frame canera. The 20mm lets me get far back to pacture my surroundings without worring I may be missing something due to the crop sensor

See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

Will this lens work with an EOS RP and adapter?

Will this lens work with an EOS RP and adapter?
Asked by: David
Yes it will.
Answered by: Steve
Date published: 2020-01-16

question

please let me know if anyone used an XL 0.64x Speedbooster + GH4 + Canon 20mm f/2.8 USM. Will work fine?
Asked by: Spyros A.
I am using this lens via 7d attached with a filter for street portrait photography in sunny days visa vic 50mm of f/1.4. I am happy with those lenses. Regards Golam Rabbani. My email address is [email protected]
Answered by: Golam
Date published: 2019-05-15

question

Will this lens mount to the Panasonic GH4 with the Apeture DEC Lens regain?
Asked by: Gregory P.
You could mount this lens on the GH4 using the Aputure DEC LensRegain Follow Focus for MFT, yes.
Answered by: Christina S.
Date published: 2018-08-26

question

Will this lens work on a camera body that is not full frame?
Asked by: Anonymous
Yes this can work on an APS-C or super 35mm camera sensor. just a reminder the focal length of the lens will be different if attached to a crop sensor.
Answered by: Camille P.
Date published: 2018-08-26

question

Is there an adaptor for this to mount on a Sony FE mount a7MkII?
Asked by: Anthony B.
No, you would have to purchasr that separately.
Answered by: Trina N.
Date published: 2019-05-16

question

Is it compatible with canon 5D mark iii?
Asked by: Anonymous
Yes, the lens is fully compatible with the Canon EOS 5D Mk III camera as well as all other EOS SLR and DSLR cameras.
Answered by: Yos O.
Date published: 2018-08-26

question

is there any warranty on this item?
Asked by: Anonymous
Yes. This particular model is a Canon USA product. It will be warrantied against defects for a period of 1 year, by Canon. If you were to choose the Imported version of the same lens, it would be warrantied for defects for the same amount of time, but by B&H.
Answered by: Chris L.
Date published: 2019-08-18
  • y_2020, m_5, d_1, h_12CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.5
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_7
  • loc_en_US, sid_12082, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_bhphotovideo
036

Close

Close

Close