David Dixon wrote:
Collin Brendemuehl wrote:
I know it works with manual-focus lenses just fine.
But to use the feature with AF lenses, what's needed?
Cover the AF data pin on the mount?
Disallow engaging the AF mechanical connection?
Anything else?
Collin,
I can't check if this actually works at the moment, but I think you can
do this on certain AF bodies - works on (P)Z-1, doesn't work on MZ-7
(ZX-7). Possibly works on all AF bodies with an AF (continuous) and AF
(single) selector:
You need a custom electronic cable release - either make your own or
modify an existing one. The normal release triggers focusing/metering
with a light press, then takes a photo with a firmer press. If you wire
a release so that the focus never gets activated (ie connect only 2 of
the 3 wires) and then lock it pressed down, you'll only take a photo if
the subject comes into focus.
For this to work, you'll need an AF lens mounted normally, and focus
mode set to AF-S.
Actually, I'd be interested to know if my recollection is correct, and
also which cameras this really does work on.
David
Clever idea. I see no reason for this not to work. You would have to
use manual metering and hope conditions do not change.
mike
