Shouldn't make any difference when a non-electronic interface lens is
fitted. The iris actuator should be simply pushing the lens' actuating
lever to the limit of its travel allowing the lens to achieve the
correct aperture, which it demonstrates it does properly when making
exposures based on an external meter reading.
Godfrey
On Apr 5, 2009, at 9:13 AM, Bob Sullivan wrote:
Mike,
That's along the same lines as I've been thinking...
Regards, Bob S.
On Sun, Apr 5, 2009 at 3:03 AM, mike wilson <m.
[email protected]> wrote:
Another possibility (idle speculation, if you will) is that, when
measuring
with the green button/ael system on a legacy lens, the camera
calculates an
f value, rather than using the actuation lever position. This is then
applied during exposure but the camera is now using the position
for the
actuation lever that it "knows" applies to that f value - which is
not the
same as the actual one required, due to the change in iris actuation.
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