It will probably affect evaluative metering. Focusing info can help the
camera "recognizing" the type of situation, correcting 16-segment exposure
evaluation according to the data base stored in camera memory. Not sure if
it only works in scene modes or in any shooting mode usig multi-pattern
metering.
I think it (fortunately) won't affect spot and center-weight measurements.
Dario
----- Original Message -----
From: "Shel Belinkoff" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, April 05, 2006 11:37 AM
Subject: Re: F v FA Lenses
How does that help make a better photograph? If the camera/lens will
focus
where the photographer wants the focus to be, what difference does it make
if the camera knows the focusing distance?
Shel
[Original Message]
From: Dario Bonazza
Some years ago I've been confirmed by a Pentax designer that FA lenses
have
more advanced electronics, telling the camera the focusing distance
(among
other things). That's the reason for having FA-series prime lenses.