The Viltrox EF-EOS M2 0.71x lens adapter allows the use of Canon EF lenses on EF-M cameras, including the Canon EOS M series. This adapter features a 0.71x focal length multiplier, which increases the equivalent focal length while effectively widening the aperture by one stop, providing improved performance in low light and faster shutter speeds. The optical design consists of four groups with four optical glass elements to maintain image quality. Full functionality is ensured through support for EXIF signal transmission, autofocus, and adjustable aperture control. A USB port allows for firmware updates to ensure compatibility with future camera models. The adapter measures approximately 65 mm in diameter and 25 mm in length, weighing around 180 g. Made from durable aluminum alloy with brass components at the lens mount, this adapter offers reliable performance for photography applications. The black finish complements the aesthetics of standard camera equipment. This adapter is designed for photographers looking to expand their lens compatibility options while maintaining optical performance standards.