Quick answer
The Canon FD 20mm f/2.8 S.S.C. is a ultra-wide prime lens covering 20mm at f/2.8 for the Canon FD mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
This 20mm f/2.8 manual-focus wide-angle prime lens from Canon fits Canon FD mount cameras. The wide view suits landscapes, architecture and environmental shots.
Canon FD 20mm f/2.8 S.S.C. specifications
- Brand
- Canon
- Mount
- Canon FD
- Focal length
- 20mm
- Maximum aperture
- f/2.8
- Lens type
- Prime
- Format coverage
- full-frame
- Released
- 1973
- Optical construction
- 10 elements in 9 groups
- Autofocus motor
- none
- Minimum focus distance
- 0.25 m
- Maximum magnification
- 0.13x
- Filter thread
- 72 mm
- Weight
- 345 g
- Length
- 58 mm
- Diameter
- 75 mm
Specification source: en.wikipedia.org
What can you shoot with the Canon FD 20mm f/2.8 S.S.C.?
At 20mm this is a ultra-wide prime, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
Its bright maximum aperture handles indoor and evening light reasonably well.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera). Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 20mm | 84° | 94.5° |
| APS-C | 1.6x | 32mm | 58.7° | 68.1° |
| Micro Four Thirds | 2.0x | 40mm | 48.5° | 56.8° |
Frequently asked questions
What mount does the Canon FD 20mm f/2.8 S.S.C. use?
It uses the Canon FD mount, so it fits Canon FD cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Canon FD 20mm f/2.8 S.S.C.?
It is a fixed 20mm lens with a maximum aperture of f/2.8. That makes it a ultra-wide lens.
Is the Canon FD 20mm f/2.8 S.S.C. a prime or a zoom lens?
It is a prime lens with a fixed 20mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.
What is the Canon FD 20mm f/2.8 S.S.C. equivalent on a crop sensor?
On APS-C (1.6x crop) it frames like 32mm on full frame, with a 58.7° horizontal and 68.1° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 40mm on full frame, with a 48.5° horizontal and 56.8° diagonal field of view. These figures are calculated from the focal length and crop factor.
Alternatives for Canon FD from other brands
All Canon FD lensesSame mount, overlapping focal range, closest maximum aperture first.
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