Compatibility: Designed for compatible with Canon EOS R series mirrorless cameras, allowing use of T2 (M42x0.75) lenses including astronomy, microscope, and manual lenses. Optical Integrity: No optical elements, preserving the original sharpness and image quality of the T2 lenses. Material Construction: Made from alloy, offering strong durability and precise fit compared to standard imported adapters. Easy Installation: Simply attach the T2 lens to the adapter, then mount the adapter to the RF mount camera like a standard lens. Application: Ideal for photographers looking to expand lens options, use vintage or specialty lenses, or adapt manual lenses to modern Canon RF mirrorless cameras.