The EOS 50D includes a new HDMI (High Definition Multimedia Interface) output device that enables high definition display of your photographs on any HDTV with HDMI ports. It's remarkable to behold the details of your photographs in Full HD, and it's easy with the EOS 50D. Resolution is set automatically to match the TV to which you’ve connected, and images are displayed in a full-frame 3:2 ratio with blacked out bars to the left and right of the image.
With some lenses, the peripheral AF points may become sensitive to either vertical or horizontal lines (they will not function as cross-type AF points). These lenses are: EF 35-80mm f/4-5.6, EF 35-80mm f/4-5.6 II, EF 35-80mm f/4-5.6 III, EF 35-80mm f/4-5.6 USM, EF 35-105mm f/4.5-5.6, EF 35-105mm f/4.5-5.6 USM, EF 80-200mm f/4.5-5.6 II, EF80-200 f/4.5-5.6 USM.