I'm fairly sure I have one of these; I found this thread via Google, because I was curious about the lens, which I have just hacksawed so that it will mount properly on a Canon 5D with a PK-EOS adapter.
My copy has 35-70mm 1:35-4.8 written on the front rather than 3.5-4.6, and I can't find anything about it on the internet either. It has a macro scale, although it's not very macro. I surmise it was a kit lens. I got it free with a Pentax P30, which came with a longer Tokina zoom lens (70-135mm or similar) as a set.
I've mounted it on my Canon 5D, which is probably heresy in this forum, but then again it's a kit zoom from the 1980s. The build quality is nonetheless much better than modern kit zooms - metal and rubber, with a snappy aperture and a smooth zooming motion. It zooms outwards to 35mm, inwards to 70mm. Optically it seems to have nothing wrong with it, but I haven't really tested it yet. The mount is very silver, almost like a mirror.
The reason I bought a PK-EOS adapter is because I am curious about the various odd 55mm f1.2 lenses out there, e.g. the Revuenon and Cosina and Porst 55mm f1.2s, but that's another thread (quite literally so in this case).
Last edited by Ashley_Pomeroy; 11-11-2008 at 01:20 PM.
Reason: Changed "50mm" to "55mm" AGAIN
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