Pentax smc Pentax-FA 31mm f/1.8 Limited
Field of view & format coverage
▸ See it on the K-1 / K-1 Mark II
MountK
Focal length31mm
TypePrime
Squeeze1× (spherical)
Eramodern
Native bodies2
The cult Limited prime.
The same 31mm covers a different angle of view on every sensor size. Tap a body to open the exact build in the simulator.
| Format | Representative body | Crop | FF-equivalent | H FOV |
|---|---|---|---|---|
| Full Frame | Pentax K-1 / K-1 Mark II → | 1× | 31mm | 60.1° |
| Super 35 / Large Format | Pentax K-3 Mark III / Monochrome → | 1.55× | 48mm | 41.2° |
Field of view assumes the lens covers the sensor; a smaller-format lens may vignette on a larger sensor.
Native K — 2 bodies
Via adapter / booster — 31 bodies
What mount is the Pentax smc Pentax-FA 31mm f/1.8 Limited?
It's a K-mount lens. focalcomp's registry also adapts it to E bodies.
How does the Pentax smc Pentax-FA 31mm f/1.8 Limited frame on Super 35?
Its 31mm works out to roughly 47mm full-frame on a ~1.5× Super 35 sensor. See the exact build in the simulator.
Which cameras can use the Pentax smc Pentax-FA 31mm f/1.8 Limited?
2 bodies mount it natively, and 31 more via adapters or speed boosters. See the full list below.