Bob Atkins of Photo.net has published a Canon EOS 5D Review

The Canon 5D is a professional, quite compact D-SLR camera with impressive specifications. It is unlike any previous digital SLR in that it combines a full-frame (35 mm sized) high resolution sensor (12.8 megapixels) with a relatively compact body. The EOS 5D is aimed to slot in between the EOS 20D and the EOS-1D professional digital SLR’s, an important difference when compared to the latter is that the EOS 5D doesn’t have any environmental seals. While Canon don’t specifically refer to the EOS 5D as a ‘professional’ digital SLR it will have obvious appeal to professionals who want a high quality digital SLR in a body lighter than the EOS-1D.

As I said at the beginning of this review, the 5d is more of a big brother to the EOS 20D than the little brother of the 1Ds Mk II or 1D MkII N. The 1Ds Mk II has everything - a 16.7MP full frame sensor, full weather sealing, 4fps continuous snapping, a built in vertical grip, a high capacity battery, the ability to use both CF and SD cards etc. However it will cost you $7200. The 1D MkII N has “only” an 8.2MP 1.3x sensor, but it has full weather sealing, a built in vertical grip, CF and SD card capability, high capacity battery and it can snap at 8.5 fps for 48 frames (high resolution JPEGs, 22 RAW frames). However the price is somewhat lower at just under $4000. The EOS 5D has a 12.8MP full frame sensor (less than the 1Ds but more than the 1D) , 3fps, no weather sealing, only takes CF cards, has a smaller battery and no built in grip - but the price is just under $3000.

It seems beforehand that the EOS 5D will become a gigantic hit. It meets the demand for a compacter professional camera; one that can fill up the gap between the EOS 20D and the 1D Mark II N.