I did a search and never found anything so I'm starting a new thread.
I was given a Canon 50mm f/1.8 for xmas and was really excited. I threw it on my 40d and started snapping away immediately. I was very impressed with my shots and quality from such a small and cheap lens.
Now I get back home and go to take the lens off. It turns about 1/4 turn and stops. I try wiggling it, pulling out and turning...nothing works. I apply a little pressure and the whole lens comes apart. The plastic lens mount gets stuck in my camera body and I'm holding the optics in my hand! I put it back together and try turning it off again. Finally it comes off in one piece. As well, when the lens was on my body the focus ring would not spin freely and the AF would not work.
I put my other lenses on the camera and test them out. Canon 17-85mm works fine, Tokina 11-16mm works fine, Sigma 70-300mm won't auto-focus.
I pack everything up and head to the shop where I buy all my goods. He says the focus ring problem occurs but he hasn't heard of it ever sticking on a body (I searched the internet and find it is not uncommon). We put the Sigma on a 50D body and it works fine. Upon further inspection of my 40d we notice one of the pins is pushed down, probably just enough to not make contact with the lens.
So now the lens AND body are being sent to Canon for warranty, even though the body is not under warranty anymore. It's problems are obviously due to the faulty 50mm lens, but now I'm scared they'll say it was impact damage and I'll be stuck fixing both myself.
Basically just getting the word out there and curious to see if anyone on here has personally had or heard of this problem. I am camera-less for 6-8 weeks now and not happy at all.
What a start to the new year.