Originally Posted by jim_jm
I believe the one you're showing above is the LTM mount version, as the focusing is in the opposite direction of the S and C mount lenses.
You are correct; the one in the photo also doesn't have the large "collar" around the base where the bayonet is located.
I've used mine quite a lot on my Sony mirrorless camera; granted, that's an APS-C format camera but I've been favorably impressed by everything I've shot with it.
Nikon S2, S3, F, F2, F3, FM2, FA, N90S, D80, D7000, D750, Sony a6000, Canon IIf, Leica CL, Tower type 3, Zorki 4, Vito B, Perkeo II, Rollei 35....