Canon DSLR

[rollaballinc]

What's the main difference between the Canon T2i / 550d , the Canon T3i / 600d, and the Canon 60d ?

The T3i has the AGC FIX and pop out lcd that the T2i doesnt.
All three cameras have the same CMOS sensor chip = same video and photo quality

Besides that whats the difference in these three camera?

 

[omarccx]

The difference between the T3i and the T2i is that the T3i seems to be more video focused. I don't think you would find a notable difference in still images, but if you like taking videos going for the T3i might prove useful.

I can't help you with the 60D though.