The Meike MK-EFTR-CL is a drop-in filter lens adapter designed to connect Canon EF and EF-S lenses to EOS R-series cameras. It features a built-in compartment for drop-in filters, including a variable ND filter with a density range from ND3 to ND500 and a UV filter, allowing for creative control over exposure and light transmission without the need for separate filters for each lens. Made from durable anodized aluminum alloy, this adapter ensures reliable performance and long lifespan. It offers full compatibility with EF and EF-S lenses, supports fast and precise autofocus functionality comparable to native RF lenses, and transmits EXIF data such as aperture, focal length, and exposure settings to the camera for accurate metadata recording. Ideal for photographers and videographers looking to expand the versatility of their equipment, the adapter measures approximately 7.2 cm in diameter and 3.5 cm in depth, weighing around 180 grams. It enables high-quality image capture and filming by utilizing existing EF mount lenses on mirrorless EOS R systems, enhancing flexibility under various shooting conditions.