"The new Canon EOS 40D, announced by Canon on August 19th 2007, is the latest addition to Canon's line of "prosumer" cameras and replaced the Canon EOS 30D. While the EOS 30D was a minor upgrade of the EOS 20D, the new Canon EOS 40D is a whole new camera, with a variety of new hardware and software features including a new sensor, a new mirror/shutter assembly, a new LCD, a new A/D converter system and a new AF system. I'll deal with the new features in more detail in the following pages. So far I've only had the chance to do some brief testing and I haven't yet attempted a detailed analysis of the various aspects of image quality, but those tests are in progress and I hope to post the results soon. Here are the updates so far."I have read a number of reviews of the 40D so far but I must say that I am most impressed with this one. The review compares the 20D and the 40D side by side in most cases and really highlights some of the incredible improvements that Canon has made. The live drive, the higher ISO performance, better colors, lower shutter sound, are just some of the few things worth calling out. The photo quality just seems to be better in every respect.