Hi. Interesting camera you have there. Just a thought, but the lens could
be permanently set in the A position, so the camera is always in program
mode with the lens attached? Are the KA contacts present on the lens? You
could try taking the camera out into bright light, and dry fire it while
looking through the lens to see if it stops down any.
With the A3000, and fixed aperture lenses (like mirror lenses), I would
guess you should put the camera in aperture priority mode so the camera
chooses a shutter automatically. But first check and see if it isn't an A
lens for program.
Todd
At 05:17 PM 1/21/01 +0000, you wrote:
>I recently obtained a Pentax A3000 which was part of a
>scientific instrument. I do not know what kind or what
>it did.
>
>It has on it a fixed-focus lens with, I assume, fixed
>aperture since I see nothing which will manipulate it.
>My questions regarding it are two-fold.
>
>1) The 5 screws which hold on the receving part of the K-
>mount on the A3000 body are not the right kind. The head
>of the screw sticks out several millimeters and none of
>my lenses will fit flush on the body nor even attach. It
>should be a simple matter of replacing the screws which
>leads to my question. How can I obtain screws for the
>A3000 body that would have been standard?
>
>2) I was looking through the viewfinder and nticed the
>lens is set to focus somewhat close (6 or so inches) and
>the images appear bigger than I could normally achieve
>in the viewfinder. I think I could enjoy just using this
>camera to take these close up pictures but I worry about
>how they turn out. Is there a setting on the A3000 that
>accounts for a fixed aperture and adjusts shutter speed
>to compensate?
>
>I thought it'd be fun to play around with the A3000 as a
>side to my K1000 but I have been thwarted and my lack of
>knowledge on program functions hinders me. Thanks for
>any thoughts anyone may have.
>
>-Mark Sheftick
>-
-
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