The M42 mount is a 42mm screw thread also known as the Pentax screw mount, the Praktica/Pentacon thread, and the universal screw mount. Lenses listed here fit M42 bodies from Pentax, Praktica, Zeiss Ikon, Chinon, Fujica, Mamiya, Ricoh, Yashica and others, and adapt easily to most modern mirrorless cameras.
4 lenses (4 good)
| IR | Focal Length |
Minimum Aperture |
Lens | Filter | Weight | Notes | Images |
|---|---|---|---|---|---|---|---|
| Good | 24mm | ƒ/3.5 | SMC Takumar 24mm ƒ/3.5 |
⌀58mm | 243 g | Steve Forbes | |
| Good | 37mm | ƒ/2.8 | MIR-1b 37mm ƒ/2.8 |
⌀49mm | |||
| Good | 58mm | ƒ/2 | HELIOS 44M 58mm ƒ/2 |
⌀49mm | Report by Gus Potenza | ||
| Good | 100mm | ƒ/2.8 | Vivitar Auto 100mm ƒ/2.8 |
⌀52mm |
M42 Lens Mount Adapters
Use an adapter to mount these lenses to many mirrorless cameras.