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Re: filmscanners: (OT) Pixels per inch vs DPI
That could explain this. My 1000 w/s dynalites are probably shorter
duration than the 2400 w/s packs. Love the Chemical Bros BTW. Fun
From: SKID Photography <firstname.lastname@example.org>
> For the record, we use ProFoto studio lights, where we've
experienced the 250th of a second cut off of
> lighting output on our Polaroids.
> Harvey Ferdschneider
> partner, SKID Photography, NYC
> RogerMillerPhoto@aol.com wrote:
> > The Speedotron Black Line 2400 watt-second has a flash duration of
1/300th second, and shorter if you dial
> > down the power. That's typical of studio power packs. That
duration is measured between the 10 percent
> > points. I'm not sure why you'd care about latency (I have to
admit I haven't been following this off-topic
> > discussion closely). Latency (the time lag it takes for the light
out put to reach 10 percent of its peak)
> > should be measured in microseconds rather than milliseconds and
should rarely be of concern.
> > In a message dated 10/31/2001 3:56:05 PM Pacific Standard Time,
> >> > I thought the longest flash durations were in the neighborhood
> >> > 1/500th sec. I don't recall seeing exposure differences at
> >> > speeds 1/250 or slower where ambient light isn't a factor.
> >> It takes "some" time for the flash to actually fire...and I would
> >> different types of flashes have different timing (latency). Does
> >> actually know what a typical flashes latency time is?
> >> I can check my Elinchroms to see what they say this time is
> >> be...as I have the service manuals for them, and they are pretty
> >> comprehensive...hopefully, they'll have something to say about