ed rader wrote in post #9143782
really? have you ventured beyond the xsi to know this?
Frequently? No, definitely not. There's two aspects here -- one is that there are technical reasons for wanting a more advanced camera, but the second is simply that having "more technology" makes up for amateur mistakes. Having more dynamic range can make up for gross over or under exposures (or even spot-on exposures if the contrast is high enough), and having a larger RAW buffer means I wouldn't have to be ready to hit the shutter perfectly every time. A few more MP means if I don't have the 300 mm lens I should be using, I can still crop a bit and isolate the subject I really want to isolate and still print a nice 8x12 out of it. Weather sealing makes me more comfortable when hiking in misty environments; I wouldn't be careless, but there are times when just having the solidness of a professional body is appreciated even for neat freaks and don't damage the device OCD people like myself.
Nothing I just said requires a different body; these are all just measures to overcome deficiencies that I may have. That's why I say I'm more interested in just shooting (a lesson I learned here) rather than trying to go with the newest in everything - that 7D looks mighty appealing. However, there are practical considerations, too -- I've shot a few times now (a marching band, for instance) where I've tried to isolate a group of three or four, and the speed of the band meant that I had to take pictures pretty much as fast as the processor could handle it. (One click, subject enters frame; next click, subject exits frame.) This had nothing to do with pre-focusing, as I was really just pointing the camera and shooting (focus set to *, not shutter), but the 6 RAW frame buffer made it a little tight. The original discussion was regarding MPs specifically, so I probably shouldn't have ventured on this path... there are holes all over my argument, I realize -- having 16 MP on a FF doesn't give more cropability than on my 12 MP XSi one of them -- but ultimately, what I'm saying is, yes, there are reasons that I'd like to upgrade to a "better" camera. In the meantime, I'm satisfied with what I have and will try to overcome my own issues before trying to say that I need a new camera. After all, Jeff posted the question of what a 16-18 MP 5D would be like, and I'm saying, it'd be sweet.