Exposure Range with UV Light

From: Sandy King (sanking@hubcap.clemson.edu)
Date: 04/26/00-10:09:17 AM Z

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>On Tue, 25 Apr 2000, Judy Seigel wrote:
>
>My exposures with gum at 3 inches from BL bulbs are 1 to 3 minutes...
>
>And the difference is because................... ?????
>

My exposures with carbon printing, with BL tubes at 1.5 inches from
printing frame, range from 0.5 to 90 minutes (more for paper
negatives).

And the difference is because? ......... Gee Whiz, log density of
shadows!!!!!!

Sandy King

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