I have the Canon EOS 20D DSLR. I bought it for myself less than a year ago, and it replaced my 35mm film Rebel EOS TI that my husband had bought for me. He is still lamenting the replacement. You might think that I would be bugging my eyes out over the new Canon EOS 5D DSLR, which has the fancy pricetag of $3300, for
just the body. It's got more megapixels, but when I did some research to compare film and digital, I found out that 6 megapixels was enough not to notice the difference between a film and digital image. So, for me, going to 8.4 megapixels made an incredible difference in quality: You can zoom in and not see a single pixel. So, if a 12.8 megapixel camera is supposed to be that much better, how are you supposed to tell the difference between 8.4 and 12.8? It was great at 6 megapixels. Are you really getting that much more bang for your buck?
The 5D is also missing a lot of my features, but that might not be a bad thing. The reviews on my camera said that it was too heavy, the LCD was too small, everybody said it was well-built, and seemed to be sturdy enough to take outside shots. The new one is just as sturdy, but it's even heavier now, because of its larger sensor. It makes better image quality, but let me repeat: It makes the camera
heavier. So, anytime you are trying to take a photo without a tripod, it just makes more sense to have a lighter unit in your hand.
The 5D got rid of the program pre-sets, which makes the camera less cluttered. They also have a few extra things that might be fun to play with. It's more of a professional's camera: this is not your amateur's camera. The The new LCD screen is larger, but I've never had a problem with mine.
The review I read says that it has 230,000 pixel resolution, which makes the image sharper; however, again, I don't have a problem with mine. So, unless you are really looking to upgrade from film to digital, or are thinking of replacing your now obsolete 10D with a heavier camera, I would recommend that you either wait for the price to come down, or for Canon to come out with a lighter-weight, sturdy camera.
Be sure to read the review, because there are loads of details about the inner strength of the camera, the different noise levels, and the AF system which I don't have room for here.
http://www.popphoto.com/article.asp?section_id=2&article_id=1603