Quick answer
The Samyang 800mm f/8 Mirror DX is a super telephoto prime lens covering 800mm at f/8.0 for the T-Mount mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
About this lens
A 800mm f/8 APS-C manual-focus telephoto prime lens, the Samyang 800mm f/8 Mirror DX is designed for T-Mount mount bodies. It brings distant subjects closer for sports, wildlife and events.
Samyang 800mm f/8 Mirror DX specifications
What can you shoot with the Samyang 800mm f/8 Mirror DX?
At 800mm this is a super telephoto prime, 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 (adapted mount, so sensor size depends on your camera). 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° |
| Micro Four Thirds | 2.0x | 1600mm | 1.3° | 1.5° |
Frequently asked questions
What mount does the Samyang 800mm f/8 Mirror DX use?
It uses the T-Mount mount, so it fits T-Mount cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Samyang 800mm f/8 Mirror DX?
It is a fixed 800mm lens with a maximum aperture of f/8.0. That makes it a super telephoto lens.
Is the Samyang 800mm f/8 Mirror DX 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 Samyang 800mm f/8 Mirror DX 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. On Micro Four Thirds (2x crop) it frames like 1600mm on full frame, with a 1.3° horizontal and 1.5° diagonal field of view. These figures are calculated from the focal length and crop factor.
