William Optics M48 T-Mount for Canon EOS R Mirrorless

The William Optics M48 T-Mount for Canon EOS R Mirrorless connects Canon RF-mount mirrorless camera bodies to M48-threaded astronomy imaging accessories. It is designed for astrophotographers who need a secure mechanical adapter between a Canon EOS R-series camera and a telescope, flattener, reducer, or other M48 imaging train.

Who Is This Product Best For?

This adapter is best for Canon EOS R mirrorless camera users connecting their camera to an M48 astrophotography setup.

Why Choose This Product?

• M48 telescope-side connection: Works with compatible M48-threaded imaging accessories.
• Canon EOS R mirrorless mount: Designed for Canon RF-mount mirrorless camera bodies.
• Mechanical camera connection: Helps complete a reliable telescope-to-camera imaging train.

Recommended Uses

• Mirrorless camera astrophotography
• Connecting Canon RF cameras to M48 flatteners or reducers
• Backfocus planning for deep-sky imaging systems

Compatibility and Accessory Notes

Confirm your telescope, flattener, reducer, or camera-side accessory uses an M48 connection and verify required backfocus spacing before imaging.

Important Limitations

This is a mechanical adapter only and does not provide electronic control, autofocus, aperture communication, or camera power.

Our Recommendation

Choose this adapter when connecting a Canon EOS R / RF-mount mirrorless camera to an M48 astronomy imaging train.