RE: How to translate log density readings to percent?

 
I made a mistake and sent my previous message prematurely:
 
.
.
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Mapped column formula is = ( 1 - R' ) / 95.32
 
 
 
OR, is it as simple as:
 
% = reading' / dmax'
 
Thanks,
Loris.
 

-----Original Message-----
From: Loris Medici [mailto:loris_medici@mynet.com]
Sent: Tuesday, September 07, 2004 1:20 PM
To: 'alt-photo-process-l@sask.usask.ca'
Subject: How to translate log density readings to percent?

d = log ( 1 / R )

d: log density
R: reflectance (%)

=>

R = 1 / ( 10 ^ d )

d' R' 1 - R' Mapped
1 - R'
0,00 100,00 0,00 0,00
0,30 50,12 49,88 52,33
0,84 14,45 85,55 89,74
1,33 4,68 95,32 100,00
Received on Tue Sep 7 04:27:21 2004