William Robb writes:
> From: "Gerald F. Cermak" <[EMAIL PROTECTED]>
>
> > I don't have an LX manual (note to self: call Pentax USA and
> order one).
> > Does anyone know if the LX, when firing a flash bulb using the
> FP jack, will
> > auto-exposure since it meters off the film? I know flash bulb
> durations are
> > fixed around 20-50mS (1/50-1/20s) with a specific delay
> requiring
> > pre-firing. The shutter/meter can respond quicker than that
> duration, so it
> > seems possible the LX can auto-expose the flash duration and
> cut off the
> > light by closing the shutter when there is enough. But does
> it really do
> > that in practice? I'd hate to waste a pile of flashbulbs
> running
> > experiments.
>
> It's an interesting idea. The owners manual doesn't address it.
> If the camera can respond quickly enough, then in theory it
> should work. You might have to waste a flashbulb to find out
> though.
> William Robb
Hehehehe. It works! (at least by monitoring shutter speed sound - I'll get
the film developed today or tomorrow).
I attached a Tilt-a-Mite to my LX with K50/1.2 set to auto, put in an M2B
(saving my cases of 11Bs and 22Bs for other projects). When I set the
aperture to f/1.2 in a darkened room, meter reads 1/15 sec for 800 ISO.
Fire - seems faster than 1/15 (maybe 1/60-1/100). I set the aperture to
f/8, and read ~4sec for exposure, another M2B, and the shutter closes at the
same rate as in the first shot (1/60-1/100s). Amazing camera. :) I think
I might need to get another LX just for this feature alone as only a OTF
metering system could accomplish this feat. I'm enabled.
Cheers,
Gerald
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