- Unique Design: The Reverse Mount Ring lets you mount any lenses with filter thread diameters of 49, 52, 55, 58, 62, 67, 72, or 77 mm onto the Canon EOS EF-M SLR Camera Body. - Material: Aluminum alloy; durable, does not deform, corrosion resistant, with a glossy finish. - Function: This reverse ring allows you to convert your focus lens into a macro lens by mounting the lens upside down to the camera body, enabling macro photography with ordinary lenses. - Notice: Autofocus, automatic aperture, and AE metering will be disabled. You need to focus manually and set exposures manually. Shoot in manual mode or aperture priority mode. - Applications: Use scenarios - Macro close ups of small subjects such as coins, flowers, jewelry, or electronics components. - Product detail shots for ecommerce or advertising, highlighting texture and fine details. - Creative macro photography for art projects or educational demonstrations.