William Optics M48 Camera adapter Canon EOS R T-Mount: mount your Canon EOS R to the flattener
The William Optics M48 adapter connects your Canon EOS R camera to accessories with an M48 thread, such as William Optics flatteners and reducers. The adapter clicks onto the Canon RF bayonet and screws into the M48 connection on the other side.
M48 has a larger clear aperture than a classic T2 ring. That prevents vignetting (dark corners), especially on larger sensors. The adapter completely replaces the T2 path: your mirrorless camera is secured to your imaging train with a click and a thread.




Features
- Bayonet side: Canon RF, telescope side: M48
- Larger gap than T2, less vignetting
- For the mirrorless Canon EOS R series
- Exact fit, camera without play perpendicular to the optical axis
Compatibility
For Canon cameras with an RF mount, such as the EOS R and RP. Check the back focus of your flattener when assembling the train.
Specifications
| Camera connection | Canon RF |
| Telescope silk | M48 |
| Material | Aluminum |
You can find more accessories for this brand at the William Optics brand page.





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