N°109468 · Family detail
RubinarMirror·M42 mount
Rubinar 300mm F/4.5 Mirror MC Macro
Specifications01
MountM42
Focal length300mm
Max aperturef/4.5
TypeMirror · Macro · Telephoto · Prime
Weight700 g
Filter size77 mm
Min focus distance1.7 m
Max magnification0.2
AutofocusNo
StabilizationNo
Aperture controlNone
Lens hoodScrew-type round
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeSuper telephoto prime lens
Summary02
Rubinar 300mm F/4.5 is a manual-focus mirror (catadioptric) prime telephoto lens for M42 mounts, intended for macro and general telephoto use. Mirror design typically uses a fixed aperture geometry.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The M42 screw mount has a flange distance of 45.46 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Many M42 lenses close the aperture only when a pin at the rear is pressed. Use an adapter that presses the pin, or set the A/M switch to M.
- Sony EAdapter · 27.46 mm
- Canon RFAdapter · 25.46 mm
- Nikon ZAdapter · 29.46 mm
- Fujifilm XAdapter · 27.76 mm
- L-MountAdapter · 25.46 mm
- Micro Four ThirdsAdapter · 26.21 mm
- Fujifilm G (GFX)Adapter · 18.76 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 27.46 mm
- Canon EFAdapter · 1.46 mm
A rear element that sticks out can hit the camera mirror.
No plain adapter reaches infinity focus on: Nikon F.

Other Mounts03
This lens family is also indexed in 1 other mount.