SLR lens mount

M37×1 mount

Everything about the M37×1: flange focal distance, native lenses, cameras and which adapters keep infinity focus.

45.46 mm
Flange focal distance
1952
Introduced
SLR
System type
0
Lenses in our database

Mount facts#

Mount
M37×1
Maker
M37×1
Type
SLR
Flange focal distance
45.46 mm
Formats
24×36 mm
Electronic contacts / AF
No (mechanical / manual)
Production
1952-1957

Adapting basics#

A lens can be adapted with simple tube spacers when its flange distance is longer than the camera's. With 45.46 mm, M37×1 lenses can in principle go on bodies with shorter flanges such as Praktica B, Canon EF, Canon EF-S, Sigma SA, M39x1, Kiev Automat. Bodies with this mount can take lenses from longer-flange systems such as Nikon F, Leica R, KMZ Zenit DKL-mount, Contax N, Tamron Adaptall, Arri PL, Leica S, T-mount (T2).

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources