That part died a long time ago.
However, Pentax has made a big deal about their compatibility. Sure,
there were completely manual cameras that couldn't use the digital
lenses, but now we have digital bodies that can't use new digital lenses.
Hell, the K-3 can't use the new lens, and it's relatively recent, still
being sold as new. There isn't even a manual work around if you have an
earlier camera, as there was with SDM only auto focus lenses.
Worse I'm not even sure this will buy Pentax all that much. The 55-300
without a mechanical linkage is lighter but slower, (I guess that new
motor has to go somewhere, and they didn't want to make the lens body
bigger).
Faster is better, at least as far as the vast majority of the semi
informed buying public is concerned. It's a selling point.
I'm not even sure it will add to reliability, any impact that would
damage a mechanical stopdown lever, is also likely to to terrible things
to the plastic internals of the new lens as well. The older design might
be repairable with an adjustment, the newer will probably need expensive
parts that might not be available.
On 6/14/2016 10:01 PM, Larry Colen wrote:
P.J. Alling wrote:
And, the much vaunted backwards compatibility of Pentax Lenses
disappears in a puff purple smoke.
Do you mean that I won't be able to use my new 15-30/2.8 on my
Spotmatic body?
--
I don't want to achieve immortality through my work; I want to achieve
immortality through not dying.
-- Woody Allen
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