C7Adapters EF mount for ALEXA lets you fit Canon EF lenses on ARRI ALEXA cameras. The shorter EF flange distance (44 mm) compared to PL (52 mm) allows a mechanical adapter without optics.
EF lenses are operated manually; EF optics without an aperture ring require setting the aperture in advance or an electronic solution. Before shooting, verify collimation and infinity on the specific camera.
Ideal for
Why C7Adapters EF mount for ARRI ALEXA
- EF to ALEXA – Wider lens selection for ALEXA cameras.
- No optics – No loss of light or quality.
- Professional use – Designed for cine cameras.
- Flexibility – Combines cine and still lenses in one set.
Key specs
| Type | Bayonet adapter |
|---|---|
| Lens mount | Canon EF |
| Camera mount | ARRI ALEXA |
| Factor | 1× (no optics) |
Technical data
| Flange focal distance EF | 44.00 mm |
|---|---|
| Flange focal distance PL | 52.00 mm |







