Bargain Bin Score

John Francis johnf at
Sat Oct 17 18:54:32 EDT 2009

What was the question?  Should it work?

I used to use an Adaptall-2 300/2.8 on my PZ-1p and MZ-S with the
Pentax-KA adapter.  It worked just fine most of the time. But every
now and then the aperture display in the body would switch to "--".

I eventually tracked this down to an intermittent contact on the "A"
pin in the lens mount; hold the camera and lens in just the wrong way
(such as flexing the lens upwards with respect to the body) and the
contact would fail.

I never worked out how to fix it, because the problem went away when
I got a good deal on an A* 300 and sold the Tamron to a Nikon shooter.

On Sat, Oct 17, 2009 at 06:22:41PM -0400, Adam Maas wrote:
> Just picked up a *istDS, good condition, for $150. Didn't need another
> camera but at that price I couldn't resist.
> Question for anybody using Adaptall-2 kit on their Pentax's, I've got
> a proper KA adapter but it doesn't seem to pass aperture info to the
> body. I'm suspecting my adapter's a little busted (I'd only really
> been using it on the K2 which isn't A-aware).
> -- 
> M. Adam Maas
> Explorations of the City Around Us.
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