With the innovative Viltrox Ef-M2 0.71x Lens Mount Adapter, you can seamlessly adapt your Canon Ef-mount series lens to any Micro Four Thirds camera. This high-quality, durable adapter is designed to expand your lens options, making it a versatile addition to your photography or videography gear. The adapter's unique 0.71x speed booster function effectively reduces the original focal length of your lens (equivalent focal length = focal length x 0.71), thereby increasing the aperture by one level. This feature enhances your camera's low-light performance and allows for faster shutter speeds, giving you the ability to capture stunning images in a variety of lighting conditions.Constructed with four groups of four optical glasses, this compact adapter ensures sharp, high-resolution images with every shot. It also supports autofocus (Af) and offers an adjustable aperture, providing you with greater control over your photography and videography.