Description: All manual operation, Manual focus and manual iris adjustment manual focus, Manualiris adjustment can achieve manual exposure, Aperture priority exposure, Infinity focus. Compatiable lens: For all M42 lens Compatiable camrea :For All EOS M camera M1 M2 M3M4 M5 M6 M10. Smooth surface for effortless mount, Fine made to be light more strong. Specification: Material:Copper alloy Color: Black Size: Approx. 65*65*35mm / 2.37*2.37*1.38inch Package Includes: 1 Piece of Lens Adapter Ring
