On Mar 29, 2009, at 12:34 , Adam Maas wrote:

2009/3/29 Margus Männik <[email protected]>:
Depends. If you take K10D/K20D, that has powerful internal motor, there's no difference or the shaft drive may be even faster. Switch to K200D or K-m and you'll see the difference. Remember the film days - many said that Pentax AF
is sloooooow... until they tried the same lenses with Z-1(p) or MZ-S.
DA55 - I really don't know, why your copy is THAT slow. I've tested one and
it wasn't much slower than FA50/1.4. Have you tried another copy?


The K10D/K20D do not have powerful AF motors, although they are
noticeably less wimpy than the lower-end bodies. None of the Pentax
bodies do (as compared to bodies like the Nikon F100 or F5 or the
Minolta 7 or 9, the latter two have been known to strip gears in some
lenses due to the torque of the AF motor).


And this is a good thing?

If it doesn’t excite you,
This thing that you see,
Why in the world,
Would it excite me?
—Jay Maisel

Joseph McAllister
[email protected]





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