
Originally Posted by
HiFiGuy1
Why the differences?
It's just a matter of personal taste. I prefer shots with less sharpening over NR with sharpening.

Originally Posted by
HiFiGuy1
Don't you have a 5D Mark II?
Yes.

Originally Posted by
HiFiGuy1
how does one go about quickly changing from one set of selections to the next, on the fly?
There is a picture style button on the back of the camera. Press that once, then use the scroll wheel to quickly pick a different style and press OK.

Originally Posted by
HiFiGuy1
With a 40D like mine, what are your suggestions?
It's really a matter of personal taste. I prefer shots with low contrast and low sharpening (I mostly sharpen at output). The Canon Picture Style editor is a really neat way to build your own custom style.