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exposer time per watts //

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exposer time per watts //

Postby JPT » Thu Dec 22, 2016 2:50 pm

In the Speedball manuel they list expose time for a 115 watt bulb, 12" up at a 10x14" screen as 45min
with a 250watt BBA bulb at 10 min. Now I have a 200 watt std ---is there a chart some where to
calc. the time for bulbs between 150 and 250 watts ??
Note: I ran a screen with the 200 watt for 17 min (a wild guess) it washed out well and so far looks very good
Maybe all this timing is BS// JPT
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Re: exposer time per watts //

Postby d fleming » Thu Feb 16, 2017 12:34 pm

Try googling step wedge test. Or do a site search for it.
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