Quick answer
The Samyang 8mm f/2.8 UMC Fish-eye CS is a ultra-wide fisheye lens covering 8mm at f/2.8 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
Samyang 8mm f/2.8 UMC Fish-eye CS: a fisheye lens with a 8mm focal length and a maximum aperture of f/2.8, made for Pentax K mount cameras. A fisheye lens for creative, extreme-perspective shooting.
Samyang 8mm f/2.8 UMC Fish-eye CS specifications
What can you shoot with the Samyang 8mm f/2.8 UMC Fish-eye CS?
At 8mm this is a ultra-wide fisheye, 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. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 8mm | 132.1° | 139.4° |
| APS-C | 1.5x | 12mm | 112.6° | 122° |
Frequently asked questions
What mount does the Samyang 8mm f/2.8 UMC Fish-eye CS use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Samyang 8mm f/2.8 UMC Fish-eye CS?
It is a fixed 8mm lens with a maximum aperture of f/2.8. That makes it a ultra-wide lens.
Is the Samyang 8mm f/2.8 UMC Fish-eye CS a prime or a zoom lens?
It is a prime lens with a fixed 8mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.
What is the Samyang 8mm f/2.8 UMC Fish-eye CS equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 12mm on full frame, with a 112.6° horizontal and 122° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Samyang 8mm f/2.8 UMC Fish-eye CS 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.
