The Zeiss 35mm f/1.4 Distagon lens with T* coating is a classic lens design that's been modernized for the high resolution of cameras of today. Works great on full frame and crop sensor Canon cameras. Completely manual focus but a breeze to use once you get the hang of it. The 35mm focal length is often used for street photography or news work because its just the right amount of mid-ground, foreground and background. All metal construction feels solid in your hand and on your camera. Electronic control of the aperture. Confirmation of focus is enabled in the camera so you can rest assured the image will be in focus.