The Canon FDn 28mm f/2.8 is a 28 mm prime lens with a maximum aperture of f/2.8 for the Canon FD mount. Here are its field of view on different sensors, hyperfocal distances, Milky Way exposure limits and the cameras it fits.
Focal length
28 mm
Max aperture
f/2.8
Mount
Canon FD
Designed for
1.53× crop
Field of view by sensor
| Sensor | Diagonal angle of view | 35 mm equivalent |
|---|---|---|
| APS-C (1.5×) | 53.6° | 43 mm |
| Canon APS-C (1.6×) | 51.6° | 45 mm |
| Micro Four Thirds | 42.2° | 56 mm |
Hyperfocal distance
| Focal length | f/2.8 | f/5.6 | f/8 | f/11 | f/16 |
|---|---|---|---|---|---|
| 28 mm | 14 m | 7.2 m | 5.0 m | 3.7 m | 2.5 m |
Circle of confusion 0.020 mm (sensor size the lens is designed for).
Longest exposure for sharp stars
| Camera | NPF rule (wide open) | 500 rule |
|---|---|---|
| APS-C (24 MP) | 7.7 s @ f/2.8 | 11.7 s |
Where to buy
B&H PhotoAmazonKEH (used)MPB (used)FAQ
What is the Canon FDn 28mm f/2.8 equivalent to on APS-C?
It is designed for a 1.53× sensor, giving a full-frame equivalent of 43 mm.