Designed for Canon EF-mount DSLRs, this 20mm f/1.8 ED AS UMC Lens from Rokinon is a bright wide-angle prime featuring an intuitive manual focus design and enhanced optical construction. Two aspherical elements and three extra-low dispersion elements are used to reduce both spherical and chromatic aberrations for greater sharpness, clarity, and reduced distortion. The optics also feature an Ultra Multi-Coating to guard against lens flare and ghosting for increased contrast and color neutrality when working in strong lighting conditions. The manual focus operation affords working with subjects as close as 7.9" away, and a rounded seven-blade diaphragm contributes to a pleasing bokeh quality.
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Key Features
- EF-Mount Lens/Full-Frame Format
- Aperture Range: f/1.8 to f/22
- Two Aspherical and Three ED Elements
- Ultra Multi-Coating
Designed for Canon EF-mount DSLRs, this 20mm f/1.8 ED AS UMC Lens from Rokinon is a bright wide-angle prime featuring an intuitive manual focus design and enhanced optical construction. Two aspherical elements and three extra-low dispersion elements are used to reduce both spherical and chromatic aberrations for greater sharpness, clarity, and reduced distortion. The optics also feature an Ultra Multi-Coating to guard against lens flare and ghosting for increased contrast and color neutrality when working in strong lighting conditions. The manual focus operation affords working with subjects as close as 7.9" away, and a rounded seven-blade diaphragm contributes to a pleasing bokeh quality.
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Rokinon 20mm f/1.8 Overview
A wide-angle prime designed for full-frame Canon EF-mount DSLR cameras, this 20mm f/1.8 lens can also be used on APS-C models where it will provide a 32mm equivalent focal length.
Bright f/1.8 maximum aperture benefits working in low-light conditions and also affords greater control over depth of field for selective focus control.
Two aspherical elements are used to reduce spherical aberrations for increased sharpness and minimized distortion.
Three extra-low dispersion elements help to control chromatic aberrations and color fringing for improved clarity and color fidelity.
An Ultra Multi-Coating has been applied to individual elements in order to reduce flare and ghosting for increased contrast and a neutral color balance.
Manual focus operation allows for precise control with a minimum focusing distance of 7.9".
Rounded seven-blade diaphragm contributes to a smooth and pleasing bokeh quality.
UPC: 084438765311
Rokinon 20mm f/1.8 Specs
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Packaging Info
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Rokinon 20mm f/1.8 Reviews
Good quality for an excellent price
By Sheryl
Rated 4 out of 5
Date: 2026-01-16
I was pleased with my new nighttime prime lens. Easy process and excellent quality lens.
Super Mega Analog
By Kenneth
Rated 4 out of 5
Date: 2019-08-22
Great in low light. Easy to use. It doesn’t feel like the more expensive lenses, but it seems to get the job done for the price. Check your focus, no auto here
See any errors on this page?
Will this fit on a canon rebel t6?
Will this fit on a canon rebel t6?
Yes, the Rokinon 20mm f/1.8 ED AS UMC Lens for Canon EF is compatible on the Canon Rebel t6.
Date published: 2023-09-28
Is it compatible with Canon t3i?
Is it compatible with Canon t3i?
Yes.
Date published: 2020-08-13
Is the compatible with Canon EOS R5 with an EF ...
Is the compatible with Canon EOS R5 with an EF adapter?
Yes, the Rokinon 20mm f/1.8 ED AS UMC Lens for Canon EF will work on the Canon R5 camera when using the Canon EF to RF adapter. But because there are no electrical contacts on the Rokinon lens, the R5 would need to be set to shoot without a lens. Also it will only work in aperture or manual exposure modes.
Date published: 2025-05-07
question
Does this lens have a chip for Canon?
No, it does not.
Date published: 2018-08-27
Can I use this lens in aperture priority mode on ...
Can I use this lens in aperture priority mode on my camera? Will in camera light meter work automatically and set proper SS?
Canon DSLR camera's built-in light meter will set the correct shutter speed in aperture priority mode with the attached Rokinon 20mm f/1.8 ED AS UMC Lens for Canon EF.
Date published: 2024-11-16
question
Does this lens for the fujifilm X have the same image circle as the full frame version?
No, this has an image circle appropriate for the smaller APS-C sensor of Fujifilm cameras. It cannot cover full frame.
Date published: 2018-08-27
On the Nikon model, does the focus work in the ...
On the Nikon model, does the focus work in the proper Nikon way, or is it backwards in the same direction towards infinity as Canon lenses are?
The focus is similar to Nikon, the infinity mark is on the left.
Date published: 2019-12-12
Is it possible to use an 82-77 mm step down ...
Is it possible to use an 82-77 mm step down filter adapter so I can use the lens with an 82 mm screw on filter?
A step-down filter is designed to use a smaller filter on a lens with a larger filter thread. As such, you would not use a step-down filter to connect an 82mm filter on a 77mm lens filter thread. You would instead need a 77-82mm step-up filter to connect an 82mm filter on the lens' 77mm filter thread. However, do note that if you use a step-up filter, you may not be able to use the lens hood and may need to remove the lens hood from the lens before using the larger filter setup. The Sensei 77-82mm Step-Up Ring, B&H # SESUR7782, would allow you to use an 82mm filter on the Rokinon 20mm f/1.8 ED AS UMC Lens for Nikon F.
Date published: 2021-03-25
