Alpa

For Alpa, flange focal distance (mm) is 37.8; mount type is bayonet; throat diameter (mm) is 42, verified against its source on 2026-08-13.

Mount name: Alpa verified
Flange focal distance (mm): 37.8 verified
Mount type: bayonet verified
Throat diameter (mm): 42 verified

Sourcegraphics.cornell.edu

Verified2026-08-13

Review by2028-08-12

DatasetCamera mount flange focal distance and adapter feasibility

What the source says

Alpa | bayonet | 37.8 | 42 |

— graphics.cornell.edu, retrieved 2026-08-13

Source

graphics.cornell.eduhttps://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html

Last verified against source: 2026-08-13. Due for re-check by 2028-08-12. This page as Markdown · OKF bundle · full dataset as JSON.