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05-07-2010, 11:42 AM   #1
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pentax 400mm to 600mm F8 to F12

I have just bought this lens. It is a mirror type model. I understand that it is F8 at 400mm but progresses to F12 at 600mm.

I have not had a real opportunity to use this lens to any extent. It is as mint and I suspect that it has not had virtually any use.

I can find no information regarding this lens.

I would be interested in any comments.

05-07-2010, 12:11 PM - 1 Like   #2
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You may have already gone to Dimitrov's site, but if not, it is one of the 1st places to go regarding Pentax K-mount.

K 400-600/8-12 Reflex

The second place I go for PK & PKA lenses is here although your lens doesn't seem to be covered.

Pentaxforums has a little info on it in the lens review database.
06-03-2010, 11:33 PM   #3
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Reviews are tepid at best. Either way, would love to see some sample images if you have the time!
06-04-2010, 05:01 PM   #4
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I'm curious how you feel about this lens also. I see there's a couple for sale on ebay right now, although I just cant see myself spending much on one of these lenses, and the asking price seems a little high.

06-04-2010, 08:26 PM   #5
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To be frank about this lens, the only way I'd get it is if I had an annual income of 5x my current income. Even then, it would be for collection purposes. I just don't see its IQ beating the Tamron 500mm.

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