Quick answer
The Fotasy M3517 35mm f/1.7 is a wide-angle prime lens covering 35mm at f/1.7 for the M42 mount. Its fast maximum aperture helps in dim light and gives good subject separation.
About this lens
Fotasy M3517 35mm f/1.7: a fast manual-focus wide-angle prime lens with a 35mm focal length and a maximum aperture of f/1.7, made for M42 mount cameras. The wide view suits landscapes, architecture and environmental shots.
Fotasy M3517 35mm f/1.7 specifications
What can you shoot with the Fotasy M3517 35mm f/1.7?
At 35mm this is a wide-angle prime, which typically suits:
- Landscapes and cityscapes
- Street and travel photography
- Environmental portraits and interiors
Its fast maximum aperture helps in dim light and gives good subject separation.
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 | 35mm | 54.4° | 63.4° |
| APS-C | 1.5x | 53mm | 37.8° | 44.8° |
| Micro Four Thirds | 2.0x | 70mm | 28.8° | 34.3° |
Frequently asked questions
What mount does the Fotasy M3517 35mm f/1.7 use?
It uses the M42 mount, so it fits M42 cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Fotasy M3517 35mm f/1.7?
It is a fixed 35mm lens with a maximum aperture of f/1.7. That makes it a wide-angle lens.
Is the Fotasy M3517 35mm f/1.7 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/1.7.
What is the Fotasy M3517 35mm f/1.7 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. On Micro Four Thirds (2x crop) it frames like 70mm on full frame, with a 28.8° horizontal and 34.3° diagonal field of view. These figures are calculated from the focal length and crop factor.
Alternatives for M42 from other brands
All M42 lensesSame mount, overlapping focal range, closest maximum aperture first.
