I recently purchased a T2i, and it came with the standard 55mm lens. My uncle (due to an unfortunate theft) has a Sigma 70-300mm DL Macro lens that he used on his old EOS Rebel (was not a digital camera). I tried it out on mine, not expecting it to fit, but it did. I have the following questions...
1. Does this old "film" lens work with a digital camera?
2. Am I damaging my camera using it?
3. When I tried to snap a few shots to test it, it would focus no problem, but when I went to preview the picture, I was only able to see one. Every other pic says "Err 1 Communications between the camera and lens is faulty. Clean the lens contacts." Any thoughts about this? I did clean the contacts with an alcohol swab, and it didn't help.