Shel Belinkoff wrote:
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
In the 90's when I was a camera buyer, my Pentax rep explained it this way:
The F lenses do communicate focus distance.
The FA lenses communicate focus distance and MTF data. The combination
of that data can be used to determine optimum aperture for a given
program line, in a given set of light and metering conditions. On the
"smiley mode" cameras, focus distance is one determinant of which
program line is auto-selected, and MTF helps to determine how that
program line is weighted.
