Summary: I decided to go with the EOS 50D after reading tons of reviews, and being told for years I was wasting my time with Pentax. I went from a Pentax k20 to this, I can say the image quality was a step up, but that's about it. I could not stand the feel of the body in my hand, the controls felt somehow clunky, I did not like the interface, or battery life. I ended up selling the canon and picked up a Pentax k-5II, in my opinion a much better camera.
Summary: I bought a 50D through Amazon.com in April, 2009. On the first one, the autofocus would not work at all. I spent about $35, for which I was never reimbursed, to send it back to Amazon.com. They sent me a replacement, which worked fine for about 6 months, then suddenly started producing corrupted, unreadable RAW files. I again spent about $35, but this time sent it back to Canon to be repaired under the 1-year warranty.
Summary: I am a professional wedding photographer and purchased this camera as a backup camera in February 2009 before going to shoot a Puerto Rico wedding. I have owned Canon Rebel, Canon 20D, Canon 30D, Canon 50D, and Canon 5D MkII, and this 50D is by far the worst of all of them. I feel a little stupid for taking this long to realize that the camera quality is this awful.
Summary: It's quite shocking that a major company like amazon.com would so shabbily pack such an expensive and delicate item. Beyond the bubble wrap which was packed by Canon, Amazon.com did very little to prepare the package for long distance shipping. All there was was a very weak cardboard box cushioned by plastic airbags which was in near shreds by the time it got to me. No packing peanuts, bubble wrap or even proper taping was done.
Summary: Took delivery of this much anticipated model after much research last Saturday (May 9th)and the camera won't take pictures. It gives me an "Error 01". The camera doesn't communicate with the lens or something like that. OOOkkk. I thought that can't be, this camera (18-200mm kit) is brand new. But I still cleaned the contacts to no avail. Long story short, The camera is DOA. My post mortem google search confirmed the errors I got that it is not an isolated case.
Summary: I am surprised to see that the images on the 40D are better than the 50D. I would think logically it would be better to have the CMOS updated on the 50D, but when you compare images side by side 100% crop, the 40D wins. More Pixels doesn't mean better, and that's what the camera factories would want you to believe. The big reason I would want the 50D is for the totally improved LCD screen, which is like the D300, to see if you are getting the shot you want.
Excerpt: I have been the proud owner of a Nikon d80 for a while now and still love it. I was seduced by the idea of upgrading to the professional level d300s but had a real struggle rationalising the extra expense as an amateur user.I finally bit the bullet in January 2010 and bought the camera. It took me a little while to read through the user manual but the effort was well spent time.