Compatibility: Designed for M series lenses And for E mount cameras, both full-frame and for -C models. Build Quality: Crafted with from high-quality materials to a secure and stable connection between your lens and camera without compromising on the optical quality. Functionality: Maintains all vital functions such as focus and aperture control, while the 6Bit coding enables appropriate lens metadata transfer, enhancing the imaging capabilities of your camera system. Usage: Ideal for photographers looking to expand the versatility of their lens collection Color: As Shown Material: Aluminum Alloy Package Contents: 1 * optical adapter ring M-E 6-bit set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.