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09-19-2012, 04:51 PM   #1
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Join Date: Sep 2012
Location: Colorado
Posts: 17
film user contemplating digital

Hello, Forum readers: I have a six lens kit with my 67ii body. I'm working through my last nine ProPack boxes of Provia this season and am looking ahead to a transition to digital capture. A big question for me is, how viable are my lenses if I decide to go to the 645D? I have the 45, 55, 90, 135, 200 and 300 late model lenses. Which, if any, would pair up with the 645D body and produce high quality results? I understand the focal lengths I mentioned will have different "effective" focal lengths or equivalencies with the sensor. Also, I know I'd be focusing manually, but I'm not clear on how the exposure readings will work out. Do any of you want to clarify (or discourage me) about planning on using my existing lenses? Thanks for the input. I'm looking forward to learning a lot from this community.

09-19-2012, 05:00 PM   #2
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Join Date: Jul 2009
Location: Seattle
Posts: 7,103
Welcome.

When the 645D first came out, a lot of people were testing various 645 and 6x7/67 lenses with it and talking about it in the Medium Format Thread. I don't recall the results with specific lenses. But I do recall that the SMC Pentax 67 55mm f4 generation lens, the M* 300mm ED (IF) and M* 400mm ED (IF) were rated high. Others not as good when mounted on the 645D.

I suggest you post that question in the Medium Format Thread and the people there that have the 645D can help you.

Optically, the newer 67 generation of the 45, 90 and 135 are no different than the previous 6x7 generation of them. The 67 200mm and 67 55mm did undergo an optical change from the previous 6x7 generation, however.

Last edited by tuco; 09-19-2012 at 05:23 PM.
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