Features:
Solid full metal mount lens adapter allows M42 42mm Screw Mount Lens to fit on Canon EOSR RF mount series Full Frame Mirrorless Camera body.
Supports AV / M mode. There is no electronic element in the adapter, aperture and focusing must be manually control.
Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.
Material: Aluminium and brass.
Precise fit and solid connection - lens has no play, gap or wiggling when mounted on adapter and no adjustments are required to fit your lens.
Designed to reach infinity focus while maintaining the correct registration distance required to support CRC lenses or lenses with floating elements.

Compatible with:
For all Canon RF mount mirrorless cameras, such as EOS R, EOS RP, EOS R5, EOS R6
(Not suitable for Canon EOS EF mount film / digital SLR cameras and EOS M EF-M mount cameras)
For all M42 thread mount lenses(External diameter 42mm/Inner diameter 41mm), also called Praktica thread or Pentax thread
Tips:
1. When using the Canon EOSR full-frame mirrorless camera, if you can't press the shutter (or was reminded that the lens is installed incorrectly), you can adjust the "release shutter without lens" or " shutter priority (TV)" and other related settings in the custom settings .
2. This is a manual adapter, you can also use LCD to assist to focus, composition and metering are easy to control, convenient and fast!
3. You can use the MF zoom focus function (Generally soft key B, the button in the lower right corner), 7X or 14X zoom focus to achieve the focus function.
4. You can use M mode or A mode to shoot and enjoy the fun brought by manual!
Package Include:
1 X Lens Adapter