They are all LTM. I have no idea of the quality of the ones I just received, except for a quick visual check of the exterior. The FED lens I bought with my FED-2 camera is very good, I was pleasantly surprised by the quality.Originally Posted by Denis P.
I've put one of each on the camera to test the fit. On some of them there's a srew head on the infinity lock which is a little too thick, I intend to take a Dremel to them. They could all do with a good cleaning as well, which I'll do as soon as I get round to it.
I have no idea what the difference between the three types are. There are some external differences, with all of them out it's easy to see which is which. The "working parts" (lenses) look all the same at first glance.
I used to have a picture taken with the FED in the anniverary gallery, I'll put it back in my personal gallery.