Re: One more thing about light boxes.

[Paul Repacholi <prep@prep.synonet.com>]

> A remarkable lack of comments for this idea (or are we waiting for
> Arne to come back and weigh in).  This seems like a reasonable idea
> (from a physical sense, not necessarily a logical sense), and I'm
> betting we can trigger the flash(s) from a parallel port.  Just to
> spark some noise, what about using disposable flash bulbs (those
> cubes or strips)?  Or do they make those anymore?

You NEVER let anyone with a flash gun into a dark room, or near photo-
receptors. If they use flash bulbs, remove there money first, then
throw them out...

The peak light output from even a small flash tube can induce latch-
up in CMOS chips and destroy them. And it could take weeks for the
CCDs to recover from it. Plus the possible effects of the current
pulse when you fire it.

For flash bulbs, how would you calibrate each one? Plus the cost!
There was a good reason photographers took to electronic flash as fast
as they could!

An under-run tungsten bulb will do fine for this. I have seen dome flats
done from a 15W globe on the floor shining up into the dome. You do not
need a lot of light at all.

-- 
Paul Repacholi                               1 Crescent Rd.,
+61 (08) 9257-1001                           Kalamunda.
                                             West Australia 6076
Raw, Cooked or Well-done, it's all half baked.
EPIC, The Architecture of the future, always has been, always will be.