Hi Peter, I bought a 45TS from calumet last month, I wanted a24mm, but after reading some misleading reviews decided on the 45mmm, this was a mistake from my part and I am now seeking to sell it, so that I can buy the 24mm I wanted to start with. The 24mm will serve my photography need for a tilt and sift better.
I am based in London England, if you are in England please send me a PM.
The lens has been on my 5D once; it is in perfect condition, (cosmetically and optically).