Yes, as mentioned in my other post, you are correct. KA lenses onward
(have been around since about 1980) are chipped, so they communicate
with the camera, and is able to control auto diaphram, and in
HyperProgram mode, one of the program preferences is "MTF" so if you
like the camera chooses the sharpest aperture for each lens based on the
chipping since Pentax has had that feature for a while.
K mount lenses and M42 mount lenses are not electrically connected to
the camera, so they meter by pressing a button on the camera. The camera
stops down, takes an instant reading, opens right back up again, and
sets the camera. Alter at will.
Larry
chucknorcutt@xxxxxxxxxxxxxxxx wrote:
> But I think you'll find the Pentax lens compatibility better than Nikon. I
> don't know this for a fact but from the descriptions I've read it appears
> that the K10D is able to control auto diaphragm operation on at least KA
> lenses and maybe K lenses as well. Larry will know. It also appears that he
> is doing metering without any special considerations that a manual lens is
> mounted.
>
> Chuck Norcutt
>
>
>
>> -------Original Message-------
>> From: Joel Wilcox <jfwilcox@xxxxxxxxx>
>> Subject: [OM] Re: canon 5d manual focus lenses which work well/poorly?
>> Sent: Jun 16 '07 23:06
>>
>>
>> I've found this thread to be something of a revelation. I'm ashamed
>> that I was so uninformed about the difficulties in using Zuikos on the
>> 5D, since that is about the only reason I would purchase the body. I
>> thought that using them on E-system bodies was a little cumbersome.
>> It appears to be no better on the 5D. And why did I think it would
>> be? I'm not really sure. Hope springs eternal, I guess.
>>
>> As to the K10D -- I've loved what Larry H. has shown us, though I
>> assume it's mostly the photographer and not the camera. Any reason
>> actually to think the fabulous backward compatibility of the Pentax
>> system actually makes things better or easier with that system?
>>
>> (That's a fairly academic question, however. Having incorporated Live
>> View into my workflow, there is no way I'm living without it.)
>>
>> This whole discussion is making the N system look more and more
>> appealing in fact from the standpoint of backward compatibility.
>>
>> Joel W.
>>
>> On 6/16/07, Winsor Crosby <wincros@xxxxxxxxxxx> wrote:
>> >
>> > It looks to be a super camera.
>> >
>> >
>> >
>> > Winsor
>> > Long Beach, California, USA
>> >
>> >
>> >
>> >
>> > On / June 16, 2007 CE, at 4:58 AM, <chucknorcutt@xxxxxxxxxxxxxxxx>
>> > <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>> >
>> > > If I didn't already own a 5D I'd be seriously looking at a Pentax K10D
>>
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>> ==============================================
>>
>>
>
> ==============================================
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> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
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>
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