Quick answer
The Pentax smc Pentax-M 800mm f/8 is a super telephoto telephoto lens covering 800mm at f/8.0 for the Pentax K mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
About this lens
Pentax smc Pentax-M 800mm f/8: a telephoto prime lens with a 800mm focal length and a maximum aperture of f/8, made for Pentax K mount cameras. It brings distant subjects closer for sports, wildlife and events.
Pentax smc Pentax-M 800mm f/8 specifications
What can you shoot with the Pentax smc Pentax-M 800mm f/8?
At 800mm this is a super telephoto telephoto, which typically suits:
- Wildlife and birds
- Motorsport and field sports
- Distant subjects and the moon
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 800mm | 2.6° | 3.1° |
| APS-C | 1.5x | 1200mm | 1.7° | 2.1° |
Frequently asked questions
What mount does the Pentax smc Pentax-M 800mm f/8 use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Pentax smc Pentax-M 800mm f/8?
It is a fixed 800mm lens with a maximum aperture of f/8.0. That makes it a super telephoto lens.
Is the Pentax smc Pentax-M 800mm f/8 a prime or a zoom lens?
It is a prime lens with a fixed 800mm focal length. Primes usually open wider than zooms; this one opens to f/8.0.
What is the Pentax smc Pentax-M 800mm f/8 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 1200mm on full frame, with a 1.7° horizontal and 2.1° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Pentax smc Pentax-M 800mm f/8 fit?
Any Pentax K-mount camera, including Pentax K-1, Pentax K-3, Pentax K-3 II, Pentax K-3 Mark III, and Pentax K-30 and 15 more.
Alternatives for Pentax K from other brands
All Pentax K lensesSame mount, overlapping focal range, closest maximum aperture first.
