Compatibility: This camera lens mount adapter ring is designed to make FD mount lenses compatible with the R series of camera systems. It supports a wide range of cameras, including models like RP, Ra, R5, R6, R3, R5C, R7, R10, R50, and R100, expanding your lens options and enhancing your photography experience. Precise Hole Position: Engineered with precision, the bayonet of this adapter fits seamlessly with both the camera and lens. It ensures a tight connection, allowing for easy and smooth installation and removal, so you can switch lenses swiftly without any hassle. Exquisite Workmanship: Crafted from high-quality aluminum alloy and finished with an anodic oxidation process, this adapter ring boasts exquisite workmanship. It is sturdy and abrasion-resistant, ensuring longevity and reliable performance even under demanding conditions. Aperture Adjustment, Matting Process: The adapter features an aperture ring that allows for manual aperture adjustments, giving you full control over your exposure settings. The inner wall is matted to prevent reflected light from affecting your image quality, ensuring clear and sharp photos. Rich Features: Designed for professional photographers, this adapter supports full manual control, including manual focus and exposure, as well as aperture priority. It allows focusing at unlimited distances and is finished with matte paint for a professional look and feel. This versatile adapter is an essential tool for photographers looking to expand their creative possibilities.