The very same question was asked in the past, and yes, it is technically
possible to make a KA or later camera which can display the chosen aperture
with 'A' lens when it is not set to 'A'. I found this out when I was using
my Metz 40MZ3i flash with M135/3.5 (masked the mount to simulate 'A' lenses)
on Z-1p. The camera does not display the aperture (as expected, because none
of the Pentax cameras does), but the Metz DOES (what a surprise!!). It is
clearly that the camera knows the chosen aperture even when the aperture is
not set to 'A' for 'A' lenses (doesn't work for pre-A lenses btw), but the
cameras were not designed to display it. So you asked why? Another brilliant
Pentax decision I guess.
Regards,
Alan Chan
http://www.pbase.com/wlachan
I have been wondering why Pentax AF cameras (crippled KAF mount excepted)
will not show the aperture setting in the viewfinder when the aperture ring
is set to other than "A".
It seems to me that A lenses provide enough information to the camera
through the electronic contacts and aperature simulator for the camera to
"know" what aperture is set.
Anybody know the reason?
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