Canon today introduced the Canon EOS 5D Mark II Digital SLR camera, the successor to the EOS 5D, introduced in 2005. Building upon the EOS 5D, Canon has coupled the creative power of a full-frame CMOS sensor in a relatively compact body (6 by 4.5 by 3 inches, 28.6 ounces), together with Full HD video capture that opens the door to a much wider range of imaging possibilities for photographers.
Its jumping high in terms of both resolution and features, sporting a 21.1 megapixel CMOS sensor, 1080p HD video, 3.0″ VGA LCD, DIGIC 4 imaging processor that powers the camera’s 14-bit analog-to-digital conversion, and higher capacity battery. In other words, a camera that aims to leapfrog both its direct rivals, either in terms of resolution (in the case of the D700) or features (in the case of the DSLR-A900). Full detail below.

Key features / improvements

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 microadjustment (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 (ambient light sensor)
Live view with three mode auto-focus (including face detection)
No mirror-flip for exposures in Live View if contrast detect AF selected
Movie recording in live view (1080p H.264 up to 12 minutes, VGA H.264 up to 24 mins per clip)
Two mode silent shooting (in live view)
New jump options in play mode
HDMI and standard composite (AV) video out
Full audio support: built-in mic and speaker, mic-in socket, audio-out over AV (although not HDMI)
IrPort (supports IR remote shutter release using optional RC1 / RC5 controllers)
UDMA CompactFlash support
New 1800 mAh battery with improved battery information / logging
New optional WFT-E4 WiFi / LAN / USB vertical grip
Water resistance: 10 mm rain in 3 minutes