Quick answer
The Cosina Cosinon-W 35mm 1:2.8 is a wide-angle prime lens covering 35mm at f/2.8 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
A 35mm f/2.8 wide-angle prime lens, the Cosina Cosinon-W 35mm 1:2.8 is designed for Pentax K mount bodies. The wide view suits landscapes, architecture and environmental shots.
Cosina Cosinon-W 35mm 1:2.8 specifications
What can you shoot with the Cosina Cosinon-W 35mm 1:2.8?
At 35mm this is a wide-angle prime, which typically suits:
- Landscapes and cityscapes
- Street and travel photography
- Environmental portraits and interiors
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. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 35mm | 54.4° | 63.4° |
| APS-C | 1.5x | 53mm | 37.8° | 44.8° |
Frequently asked questions
What mount does the Cosina Cosinon-W 35mm 1:2.8 use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Cosina Cosinon-W 35mm 1:2.8?
It is a fixed 35mm lens with a maximum aperture of f/2.8. That makes it a wide-angle lens.
Is the Cosina Cosinon-W 35mm 1:2.8 a prime or a zoom lens?
It is a prime lens with a fixed 35mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.
What is the Cosina Cosinon-W 35mm 1:2.8 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 53mm on full frame, with a 37.8° horizontal and 44.8° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Cosina Cosinon-W 35mm 1:2.8 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.
