Gene Nocon gives us this formula: T2= (L2XL1) squared x T1 Where the time
for the second print, equals the length of that second print times the
length of the first print and that sum squared; times the time of that first
print.
Any questions, feel free to email me off list.
Steve Shapiro
----- Original Message -----
From: <kpp@xxxxxxxxxx>
To: "List for Photo/Imaging Educators - Professionals - Students"
<photoforum@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Friday, June 24, 2005 1:00 AM
Subject: Any math to corelate B&W printing times to print size?
just a-wondering...
does the law of light intensity dropping i proportion to the square of the
distance apply to B&W enlargers?
i mean if a print with the head at X height will I have to inrease time 4
times for a 2X printing height? will opening the aperture 2 stops be the
same? (that is for approximations and quriosity only)
are there any details not obvious in this issue?
thanks, kostas
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