21 megapixel CMOS sensor (very similar to the sensor in the EOS-1Ds Mark III)
Sensor dust reduction by vibration of filter
ISO 100 - 6400 calibrated range, ISO 50 - 25600 expansion (1Ds Mark III & 5D max ISO 3200)
Auto ISO (100 - 3200) in all modes except manual
3.9 frames per second continuous shooting
DIGIC 4 processor, new menus / interface as per the EOS 50D
Image processing features: Highlight tone priority, Auto lighting optimizer (4 levels), High ISO noise reduction (4 levels), Lens peripheral illumination correction (vignetting correction)
RAW and SRAW1 (10 MP) / SRAW2 (5 MP)
RAW / JPEG selection made separately
Permanent display of ISO on both top plate and viewfinder displays
AF micro adjustment (up to 20 lenses individually)
Three custom modes on command dial, Creative Auto mode
Image copyright metadata support
98% coverage viewfinder (0.71x magnification)
3.0" 920,000 dot LCD monitor with 'Clear View' cover / coatings, 170° viewing angle
Automatic LCD brightness adjustment