Caveman <[EMAIL PROTECTED]> wrote:

>In K mount, for your *ist D:
>
>http://www.pentax.co.jp/ppc/productE/pro_a/gif/yf3528.jpg
>
>http://www.pentax.co.jp/ppc/productE/pro_a/gif/yf5028.jpg

Are you sure they're K mount?
The proportions don't look quite right to me. Perhaps medium format?

yf3528.jpg could be a 35mm f/2.8 and yf5028.jpg could be 50mm f/2.8 and
both these focal length/aperture combinations would make more sense for
645 format.

Just hairbrained speculation, you understand, but hey, it's traditional!

-- 
Mark Roberts
Photography and writing
www.robertstech.com

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