How does one check infinity focus at 16mm? It would seem that the DOF
is so extensive at that focal length, even at f2.8, that it would be
nearly impossible to determine accurate focus. I don't think I've ever
attempted infinity focus at 16mm on my lens. I'll have to try it and
see what happens.
Paul
On Feb 11, 2009, at 11:59 AM, jtainter wrote:
My K20D came back yesterday. It appears that to correct the sensor
problem Pentax just replaced all or most of the electronics. When I
turned it on, it started up with the initial menu, asking for
language, location, time. Then I had to go into the menus and set
all my preferences again. Now I get to start testing 18 or 19 lenses
for autofocus adjustment.
The new DA* 16-50 F2.8 has a problem like the last one had. It won't
autofocus to infinity at 16 mm. So even in newer copies of this lens
there are problems. I will try to correct this with the autofocus
adjustment, but if that doesn't work it will have to go back to
Pentax--again. I'm getting tired of this.
Joe
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