Canon EOS 5D
This is a condensed review of the Canon EOS 5D provided by DPReviews.com. The full review can be found at the link provided.
Conclusion - Pros
Excellent resolution, a real upgrade for eight megapixel Canon owners (EOS 20D)
Full frame 35 mm size sensor delivers film-like shooting experience, real wide angle
Very large, bright viewfinder really fills your vision
Very low noise even at higher sensitivities
About a third of a stop more sensitive than indicated
Very well implemented large buffer supported by fast CF throughput
Very well built, more robust feeling than the EOS 20D (closer to 1D build)
Very fast in use, short shutter lag, instant startup
Spot metering (wasn't available on the EOS 20D)
New Picture Styles make it easier to get 'ready to use' results straight from the camera
Wide range of image parameter adjustment (-4 to +4 for most)
Wide range of ISO sensitivities, ISO 50 - 3200 (with 'ISO Expansion' enabled)
Huge LCD monitor with great resolution, dimmer than some smaller screens
Soft touch shutter release
Proper RAW+JPEG with immediately selectable JPEG image size
Interchangeable focus screen
Remote tethered capture software for studio work (included)
Orientation sensor
Optional WFT-E1 wireless transmitter (802.11 b/g)
Supplied software bundle very good; ZoomBrowser EX and DPP both matured now
Conclusion - Cons
Edge softness / falloff / chromatic aberrations, needs good lenses
AI Servo (continuous AF) interference banding issue (certain lenses, high sensitivities)
Same old 'CF compartment door shuts camera down' issue
Picture Style differences between RAW Image Task/Camera and DPP
Picture Style tone curve not indicated in camera menu (contrast is an offset, not absolute)
Pretty average automatic white balance in artificial light
Mirror lock-up still buried in menus (should be a continuous shooting mode option)
No mass storage device USB mode, limited throughput (just 2.5 MB/sec)
No anti-reflective coating on LCD monitor
No GPS support
No built-in flash, no built-in AF assist lamp
Price premium over cropped sensor cameras