I'm fairly sure the conversion is missing the most important point of
the difference between A lenses, and earlier lenses; which is that the
stop-down coupler acts linearly rather than non-linearly! The
electrical contact is merely a way for the lens to tell the camera
that a linear-stop-down type lens is attached. The conversion is thus
just lying to the camera - as far as I know anyway.

Eric.

On 17 February 2011 20:46, Steven Desjardins <[email protected]> wrote:
> I have a K 28 and it's tempting to try to make it into a nice A type
> normal lens.  Given the source of the article, however, maybe I should
> resist temptation ;-)
>
> On Thu, Feb 17, 2011 at 1:03 PM, Collin Brendemuehl
> <[email protected]> wrote:
>> http://evangelicalperspective.blogspot.com/2011/02/converting-lens-to-pentax-mount.html
>>
>> Works for me.
>> Hope you find it useful as well.
>>
>>
>>
>> Sincerely,
>>
>> Collin Brendemuehl
>>
>> "He is no fool who gives what he cannot keep to gain what he cannot lose"
>> -- Jim Elliott
>>
>>
>>
>>
>>
>>
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> Steve Desjardins
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-- 
Eric

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