I just bought an old Canon EOS 650 with a 1.8 50mm lens to swap with my
new Digital Rebel. I was surprised to find that the 650 EF lens works fine
in my Rebel, but the Rebel 18-55 lens won't mount in the 650. Is there a
compatability chart I can check out before I do this again?

-- 
JK Sinrod
Sinrod Stained Glass Studios
www.sinrodstudios.com
Coney Island Memories
www.sinrodstudios.com/coneymemories