Originally posted by dcshooter [...] Also, he's wrong in saying that it will work with all m42 mount cameras, since it has the Fuji metering lug which will interfere with infinity focus on some bodies (as well as on most adapters).
Yes. I picked up an old RMC Tokina lens I wanted in "M42" mount, from a "fairly" well-known auction site, only to find, when I received it, that it actually was an "F/ST" mount (and, no, that doesn't mean "for screw thread"), which is a Fujica mount type. In my case, it would not fully screw onto the M42-to-K.mount adapter I wanted it to fit, so I had to return the lens for a refund. To his credit, the seller relisted the lens as "for Fujica ST", as well as including a warning note, "Caution, this lens is Fujica F/ST and may not work with all adapters and cameras.", in the description. [Too bad -- it was a really nice lens...]