N°103408 · Family detail
HeliosPortrait·NIKON F mount·1978
Helios-81N 50mm F/2 MC
Specifications01
MountNIKON F
Focal length50mm
Max aperturef/2
TypePortrait · Prime
Release year1978
Weight215 g
Filter size49 mm
Min focus distance0.5 m
Aperture blades6
Optical elements6
Groups4
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard prime lens
Summary02
Helios-81N is a manual-focus 50mm prime lens for Nikon F mount. It has a maximum aperture of f/2 and is typically used for portrait and low-light work.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Nikon F mount has a flange distance of 46.5 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Nikon G lenses have no aperture ring: use an adapter with an aperture lever. Nikon E lenses set the aperture electronically: use an electronic adapter.
- Sony EAdapter · 28.5 mm
- Canon RFAdapter · 26.5 mm
- Nikon ZAdapter · 30.5 mm
- Fujifilm XAdapter · 28.8 mm
- L-MountAdapter · 26.5 mm
- Micro Four ThirdsAdapter · 27.25 mm
- Fujifilm G (GFX)Adapter · 19.8 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 28.5 mm
- Canon EFAdapter · 2.5 mm
A rear element that sticks out can hit the camera mirror.
- Nikon FNative
Other Mounts03
No alternate mounts are indexed for this family yet.