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01-30-2010, 07:20 AM   #1
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Sigma 28-70mm F 2.8-4 UC MF,

Hi there, How's the coffee this morning?
Has anybody had any experience with a Sigma 28-70mm manual focus with the "A" setting in a K-PR mount? I am going to "acquire" one at
and can certainly use any and all input available. I'm certain that it will have the dastardly Ricoh pin, which I can remove but beyond that I don't know much about the lens other than I think it has good aperture from wide to out there.
Thanks to all and to all a good nap:ugh:

Last edited by jonhock; 01-30-2010 at 07:25 AM. Reason: I read it after I wrote it.
01-30-2010, 11:15 AM   #2
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You mean like this one? Third-Party Pentax Lens Review Database - 28-70mm F/2.8-4.0
02-05-2010, 05:05 PM   #3
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Original Poster
Thank you Goreman

No, It wasn't anywhere near that purty! It was a manual focus and I didn't get it anyway. I was intrigued by the aperture sizes and it was selling at a very low price.
Thank you Now I'll be keeping my eye out for this one.
I am wondering also , just for my never-ending search for knowledge, Can any body tell me if I am right in thinking that a lens in that mount, k-pr, would have the "pin"?

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