- This adapter ring is specifically designed for use with M lenses and is not compatible with the M42-EOS lens adapter. Direct attachment of M lenses to this adapter is not possible. - It is ideal for converting the port to the focus cylinder, enhancing your photography capabilities. - Constructed from durable aluminum alloy, this adapter ring ensures long-lasting reliability and performance. Key Features: - Function: Enables the use of M lenses with compatible cameras by adapting the mounting system. - Compatibility: Tailored for M lens users looking for seamless integration with their focus cylinder. - Material: Made from high-quality aluminum alloy for superior durability and resistance to wear. Use Scenarios: - Perfect for photographers who own M lenses and want to adapt them for specific camera body requirements without compromising quality. - Ideal for professional and amateur photographers seeking to expand their lens collection while maintaining compatibility with existing equipment. - An essential tool for those looking to achieve precise focus adjustments in their photography workflow. This adapter ring offers a practical solution for enhancing your photographic setup with reliable construction and functional design.