> EXACTLY the same. (Well, as near as I can measure. 100
> >units on the NuArc takes about one minute and gives about the same
> >exposure as one minute on the fluorescents.)
>
and said "You should specify the process(es) you use."
As I wrote in the middle of a possibly too-long post on the subject,
cyanotype averages 400 units on the NuArc, Platinum and Van Dyke from 300
to 400 units. The fluorescents take about a minute per 100 units --
three to five minutes for platinum & VDB. (Similarly kallitype.)
Gum is quicker. Depending on mix, paper and thickness of coat, from 80 to
200 units on the NuArc, one to two minutes fluorescent.
> My Berkey K&L metal halide requires about
> > 20 seconds to 2 min. for Fresson printing and carbon transfer,
Would you describe the "Berkey K&L Metal halide" in more detail?
Thanks,
Judy