Feature: 1. Full manual operation, manual focus adjustment, and manual aperture control. 2. Supports manual exposure with camera body, aperture priority exposure mode, and unlimited focusing distance. 3. No electronic contacts on the adapter ring; autofocus is not supported. 4. Constructed from aluminum alloy with an anodized finish for precise craftsmanship, durability, and long service life. 5. Secure and smooth mount connection, allowing easy installation and removal of lenses. Specification: Condition: New Item Type: Lens Adapter Ring Material: Aluminum Alloy Color: As Shown in Pictures Compatible Lens: Zenit M39 Mount Lens Compatible Camera Body: Canon RP, Canon R Series Cameras Weight: Approx. 61g / 2.2oz Package List: 1 x Adapter Ring