On 09/02/2011 6:12 AM, Paul Stenquist wrote:
What exactly is the "front focus problem?" I performed the autofocus fine
adjustment for the K-5 and all of my lenses. While some required minor adjustment, the
K-5 came closer as-delivered than either my k20 or K-7. And those lenses that did require
adjustment were pretty much split between front and rear focus tweaks. BTW, the two
lenses that required the most adjustment were the FA 50/1.4 and the FA35/2. The DA*
lenses were very close to dead-nuts right on.
At EV 3 and below with tungsten light, the K5 will front focus with
screw drive lenses. With SDM lenses, the AF seems to work as advertised,
or at least it does with my camera.
With screw drive lenses, my camera front focuses quite badly.
It takes a pretty particular set of circumstances (dim warm light, and a
fast screw drive lens used near wide open and a short subject
difference) to see it.
There is a lot of noise about it on PentaxForums, which is pretty
typical for them.
It's kinda Hysterics R Us
--
William Robb
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