Canon EOS 1Ds Mark III, EOS. Megapixel: 21.1 MP, Sensor type: CMOS, Maximum image resolution: 5616 x 3744 pixels. Optical zoom: 3x, Digital zoom: 2.5x. Focus adjustment: Auto, Auto focusing (AF) modes: centre weighted auto focus, multi point auto focus. ISO sensitivity: 100, 200, 400, 800, 1600, 3200, 6400, Light exposure modes: aperture priority AE, auto, shutter priority AE, Light metering: centre-weighted, spot. Camera shutter type: mechanical