I'm afraid I can't help you with guide numbers for monster flash units
but a T-32 has approximately 100 watt seconds... at least by metered
comparision between T-32s and a Lumedyne flash head with a 50-100-200
watt second power pack. At the 100 watt second setting the Lumedyne and
T-32 are within 0.1 stop of each other at both the center of the field
and the edge of a 28mm field of view where both flashes fall off 1/2
stop. I'd call them dead even since the 0.1 stop differential is less
than the differences between multiple T-32s. But all four of my T-32s
are within 1/3 stop of each other.
My Alien Bee B-800's which are supposed to be 320 watt seconds only just
match the Lumedyne at the 200 watt seconds setting or the output from
two T-32s. They also fall off 1/2 stop at the edge of a 28mm field of
view. It's quite possible that the B-400 (advertised as 160 watt
seconds) is no more powerful than a T-32. I think watt seconds is
fraught with to much market speak to know what is real. But my flash
meter, he don't lie.
Dr. Flash
usher99@xxxxxxx wrote:
> Perhaps not a great question for Dr. No-Flash, though wonder if there
> is any ballpark relationship is available for the energy? stored in
> the monster flash capacitors and GN---if the later is even meaningful
> with these things. One would have to specify the set-up. ?
> Conversely, how many w-s in a T32? Mike
>
>
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