Enhance your photography with the Sigma USB Dock Lens, a versatile accessory that enables you to attach lenses to your camera without any hassle. This lens adapter is designed for use with Canon EOS cameras and is compatible with a range of brands, including Sigma and Nikon. The adapter features a screw-in fastening system that ensures secure attachment of your lens, and an attachment cable that allows you to connect your lens to the camera body. Sold as shown in photos.