COMA Leica R to EF is a mechanical adapter for Leica R lenses on Canon EF bodies. The longer Leica R flange distance (47 mm) compared to EF (44 mm) keeps infinity focus.
The adapter is mechanical – focus and aperture are controlled directly on the lens. Before shooting, check focus at infinity and play in the bayonet; for heavier lenses use a lens support.
Ideal for
Why COMA Leica R to Canon EF adapter
- Leica R to EF – Vintage Leica R optics on EF cameras.
- Retained infinity – No optics.
- Easy to use – Purely mechanical drive.
Key specs
| Type | Bayonet adapter |
|---|---|
| Lens mount | Leica R |
| Camera mount | Canon EF |
| Factor | 1× (no optics) |
Technical data
| Lens flange focal distance | 47.00 mm |
|---|---|
| Camera flange focal distance | 44.00 mm |
