• The adapter can combine EF series lens with Canon RF S35 cinema camera or APS-C camera EOS C70 R7 R10; Not compatible with RF full frame cameras. EF-S APS-C lenses couldn't be used with this dapter.
• 0.71x focal reduction lens mount adapter can reduce the focal length of 0.71 times, improve the luminous flux, and increase the aperture by one gear.
• Supports automatic focusing, automatic aperture, anti-shake and other lens function.
• Common functions assigned to the camera, such as shutter speed and aperture settings, can be adjusted through the custom thumbwheel, which is equivalent to Canon RF lens control ring.
• Built in 4 groups of 5 elements optical glasses. The design of gold plated PIN brings excellent signal transmission.