The build of the T2i is cheaper than the 7D, a little lighter and more plastic has been used. The video quality has been described as equal however. The 7D has a few more features for still photography.
I picked up a T2i to complement my EX-3 and am very pleased with it. I love working with the EX-3 and like the image for the most part but the depth of field look that you can achieve with the T2i is quite amazing. I went the T2i route to test the DSLR waters as I wasn’t sure if the extra effort of using these cameras would be worth it over a real video camera. It was a smaller investment to start than the 7D. Now that I’ve seen the image I’m slowly adding more accessories to improve the operation of it.
Just like with EX-3 footage, I use Shotput Pro to load my original card footage onto two separate drives to archive my master files. With the EX-3 I use XDcam Transfer to convert to mov files on the scratch disk to import into FCP. With the T2i I use Log & Transfer inside FCP to access the files, transcode to ProRes and save to the FCP scratch disk.
Matching the two cameras takes a bit of work as my profiles are a little different. I do that in Color after the fact and haven’t tried to match the profiles from inside the cameras. Audio on the T2i is harder but if you are recording to the EX-3 anyway you’ve got yourself good synced audio.
Jim McNally
The Commercial Factory
http://www.commercialfactory.com