Frantisek,
> > >> Shorting the top pin and the middle pin activates meter and trips
shutter
> >regardless of AF lock.
Actually, this seems to depend on the lens too.
> >I made a cable release for myself with 2 switches and 4 buttons - each
has a
> Vadim, please elaborate on so much functions! I am interested, really !
Well, the functions are not really different.
There are 2 switches, X and Y; 4 buttons, A, B, C, D.
X and A short pins 1 and 3 (top and bottom). This activates metering and
autofocus (if enabled).
Y and B short pins 2 and 3 - this triggers the shutter only if switch X (or
button A) is on. Switch here might be useful for trap focus, when both
switches are on.
C shorts 1 and 2 - usually triggers the shutter immediately (see note
above)
D shorts 1, 2 and 3 - all of them to activavate autofocus and fire when
ready - I am not really sure on this one - it has been some time since I
tried it, not really useful anyway.
The way I usually use it is exactly the way Pentax switch works: lock the
metering with the switch, then fire - works great for bulb mode.
> BTW, what did you use for a connector? I thought of drilling the small gum
> cover, but it's not the easiest idea.
I used a computer fan connector - female 1x3 one, most fans attach to
motherboard with such, some have locks or guides, though, that would have to
be broken off. It is almost the right size - the holes are a little too
tight, easy to fix with a knife, and I cut one of the corners, more for
identification than for fitting.
Making the control itself was much more interesting - I made it from the
computer mouse board.
That was a fun project.
Vadim.
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