SLR lens mount

Contax 645 mount

Everything about the Contax 645: flange focal distance, native lenses, cameras and which adapters keep infinity focus.

64.00 mm
Flange focal distance
1999
Introduced
SLR
System type
0
Lenses in our database

Mount facts#

Mount
Contax 645
Maker
Contax
Type
SLR
Flange focal distance
64.00 mm
Formats
6×4.5 cm
Electronic contacts / AF
No (mechanical / manual)
Production
1999–

Adapting basics#

A lens can be adapted with simple tube spacers when its flange distance is longer than the camera's. With 64.00 mm, Contax 645 lenses can in principle go on bodies with shorter flanges such as Ricoh 126C-Flex, Hasselblad H, Mamiya 7, Vivitar TX, Mamiya 6, T-mount (T2). Bodies with this mount can take lenses from longer-flange systems such as Zenza Bronica ETR, Pentax 645, Rollei 6×6 (SL66/SLX), Pentacon Six, Hasselblad V, Kowa Six/Super 66, Kiev 88 / Salyut, Hasselblad 1000F & 1600F.

Sources & licences#

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