SLR lens mount

Mamiya RB mount

Everything about the Mamiya RB: flange focal distance, native lenses, cameras and which adapters keep infinity focus.

112.00 mm
Flange focal distance
1970
Introduced
SLR
System type
0
Lenses in our database

Mount facts#

Mount
Mamiya RB
Maker
Mamiya
Type
SLR
Flange focal distance
112.00 mm
Formats
6×7 cm
Electronic contacts / AF
No (mechanical / manual)
Production
1970–

Adapting basics#

A lens can be adapted with simple tube spacers when its flange distance is longer than the camera's. With 112.00 mm, Mamiya RB lenses can in principle go on bodies with shorter flanges such as Mamiya RZ, Rollei SL66, Zenza Bronica S2A, Zenza Bronica SQ, Zenza Bronica GS, Pentax 6×7. Bodies with this mount can take lenses from longer-flange systems such as none.

Sources & licences#

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