lighthouse wrote:
OK you are going to have to explain this one to me.
I have a friend who uses his 21mm Distagon on his 5D3 with no adapters and no problem.
They have the same mount, why can't you use yours?
I bought the Canon 5d Mark III specifically so that I could buy some Zeiss lenses. I rented a Zeiss lens first and had no problems.
I then bought the 21mm and after about 30 shots my camera gave me an Error Communication Problem.
I returned the lens and got the 100mm.
After a few shots I had the same problem.
I contacted Canon and they told me that they don't support third party lenses, talk to Zeiss.
Then I contacted Zeiss. They wanted me to send the lens to them, in return they would send me an immediate replacement. They thought that both lenses having a problem was weird.
They also told me that they would deal with B&H if I had an issue returning the replacement lens, if and when I chose to do so.
Then Zeiss told me that their service department just said that the Canon 5D Mark III had a compatibility issue.
This fiddle-dicking was just too much time wasted for me. I was starting to feel like a test subject...
A few weeks later I went to their website and they had taken the Mark III off their list of compatible cameras. Go figure!
I was really incensed because they advertise Canon mounts.
Tired of all this I invested instead in a Canon 50mm 1.2 and just recently I bought a Canon 16-35mm 2.8. I'm happy with both lenses.
When I learn to shit money I'll buy a 6D that has no such issues, and when hell freezes over I'll add on the Zeiss lenses I always desired...
I hope this lengthy blah, blah, blah answered your question.