[plangereis]

Nice post, Jim. I like the idea of croposition. I mean, why not. It does not mean that you should crop down to only a smallish portion (large crop) of a photo, although I admit to doing this once or twice to get an interesting smaller area of a photo because I realized after the "shooting session" that the whole original composition was not working as well as I had planned, but to refine the composition to exactly what you wanted.
For instance, if I think about my 40D, and the increase in the area of the actual image once I get it into my computer (the viewfinder shows only 96% of the actual image...approximately), I usually trim the excess I did not see in the viewfinder as I did not intend it to be in the photo in the first place. . I try to calculate this extra bit when I am framing at the time of the shoot, but usually I do not get it exactly the way i intended, hence the crop to tweak composition becomes the norm in most cases.
I have no problem with doing it. Today's high resolution DSLR's allow that latitude, as far as I am concerned, so why not take advantage of this opportunity. Like I said earlier, as long as you're not cropping most of the photo, what is the problem. This is using a kind of technology at the fullest. I mean, why else would they provide a cropping/ straightening option in programs such as Photoshop, Aperture, and Lightroom etc? No brainer for me on this one, although i am sure you will get the camp of "purists", which I thought I was, initially, that would most likely disagree with this thinking. One man's two cents worth. Cheers, mate.