Not to be a dick, but a new camera isn't what is needed here. Know how on how to crop and sample up an image is. The 5D is 12MP and the 50D 15. This is a MARGINAL increase in pixels from the 10MP of the 40D to 12 or 15 megapixels.
I really am just stunned here that you would go out and purchase something like that without actually realizing what it is you are and are not getting.
No please, be a dick. We all need to flex our internet muscle at every given opportunity.
Perhaps you don't think 50% increase in megapixels is much, but in just about any math course you can take from high school arithmetic to college algebra, they'll pretty much tell you 50% is significant... not to be a dick or anything.
Truth be told my wife talked me out of the 50D camera and into the 40D camera because of Christmas time expenses. Based on my research I wanted the 50D to begin with, but negotiated to the 40D to keep the peace in the household. Now that I've had a chance to play with the 40D, I really want the 50D or better and I sold it to her as well.
The $300 or so I've lost in the lesson isn't really an issue to me. What is important is that I get what I deem necessary to what it is I want to do.
Yes, I'm a noob to photography. I'm sure you were never new to photography, or anything else, and you've probably never made a purchasing mistake.
Oh, and I'm sorry to have stunned you. It must have been horrible. Please accept my apologies. :hug::