“We’re disappointed by how the [Canon] 5D Mark III renders detail in JPEG files, and low-contrast details, especially, look rather mushy, even at low sensitivities. At higher ISOs, noise reduction is more aggressive by default than we would like, resulting in comparatively clean but disappointingly soft images, when viewed at 100%.“
DPReview has posted their review of the Canon EOS 5D Mark III, a DSLR with 22.3MP resolution using a full-frame (24 x 36mm) CMOS sensor, ISO in the range of 100-25600 (expandable to ISO L:50, H1:51200 and H2:102400) with HD video capture at 1920×1080 pixels resolution for up to 30min recording time (no more 4GB per clip limit), an extra large 3.0-in. high resolution LCD (1040k-dot), Integrated Cleaning System, Live View for stills and video, 6fps continuous shooting, AF 61-point (up to 41 cross-type points), a approx. 100% coverage optical viewfinder, and an improved weather-resistant body.
You can read the Canon 5D Mark III Review @ DPReview.