21 megapixel Full-frame CMOS sensor (36 x 24 mm) 5 fps shooting (up to 56 JPEG or 12 RAW images buffer) Compact Flash UDMA support (up to 45 MB/sec) Large bright 'full size' viewfinder with higher magnification than the EOS-1Ds Mark II All of the operational improvements and enhancements delivered by the EOS-1D Mark III Dual “DIGIC III” processors Highlight Tone Priority Auto focus system with 19 cross type sensors and 26 focus assist points EOS Integrated Cleaning System ISO 100-1600 (expandable to L:50 H:3200) 3.0” 230K pixel LCD with Live View mode