I have a Steinheil 135/f2.8 I bought in Germany in the 50's. I epoxied the mounting plate from a dead Tamron, and it works great - sorry, no example photos. Took time to get the focus right, but worth it just for the fun of getting an old lens to work on my new Canon.
I googled a lens I am interested in - a Rokinon 2.8/14, and found a Chinese source that offered it for much less than any other source. Is this a great deal, or too good to be true?