The MTO-500 500mm f/8 mirror lens is a 500 mm prime lens with a maximum aperture of f/8 for the M39/1 mount. Here are its field of view on different sensors, hyperfocal distances and the cameras it fits.
Focal length
500 mm
Max aperture
f/8
Mount
M39/1
Designed for
1.53× crop
Field of view by sensor
| Sensor | Diagonal angle of view | 35 mm equivalent |
|---|---|---|
| APS-C (1.5×) | 3.2° | 765 mm |
| Canon APS-C (1.6×) | 3.1° | 800 mm |
| Micro Four Thirds | 2.5° | 1000 mm |
Hyperfocal distance
| Focal length | f/8 | f/11 | f/16 |
|---|---|---|---|
| 500 mm | 1593 m | 1159 m | 797 m |
Circle of confusion 0.020 mm (sensor size the lens is designed for).
Where to buy
B&H PhotoAmazonKEH (used)MPB (used)FAQ
What is the MTO-500 500mm f/8 mirror lens equivalent to on APS-C?
It is designed for a 1.53× sensor, giving a full-frame equivalent of 764 mm.