Shel,
With Pentax cameras you have the option of letting the camera pick the
active AF point automatically, or picking it yourself. There's never
more than one point actually determining focus (Although the other
points are used in Automatic mode to determine if the subject is moving
and when to switch active points).
Other brands use somewhat more complicated methods (especially Canon's
45-point system, where I can actually select groups of active points).
-Adam
Shel Belinkoff wrote:
Why at those times?
I don't understand the concept of multiple AF points (not that you said you
used that setup). If there are three or five or more active points, it
would seem that the camera would decide what's in focus. How does one
control the main focus point when shooting with multiple focus points?
Again, I'm ignorant of such things ....
Shel
[Original Message]
From: Rob Studdert
I find it easier to focus using the center AF spot, recompose and shoot
than to fiddle with a switch and a knob to change the focus point, then
press the shutter etc. or let the camera pick a spot.
Me too, not that I use AF much but about the only times I've bothered to
set
the AF spot to other than the centre spot was when shooting motor-sports
with a
long lens.
