[pure-silver] Re: filter factor

oops. 0.3 is wrong
0.1
.3 is 1 stop
.6 is 2
.9 is 3
etc/
 
Bob Adler
Palo Alto, CA
http://www.raflexions.com 



----- Original Message ----
From: Shannon Stoney <sstoney@xxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Friday, September 29, 2006 12:08:51 PM
Subject: [pure-silver] filter factor


I just bought a Hoya yellow K2 filter for a view camera lens. 
(Luckily it also fits my medium format camera.) I held it up in front 
of the spot meter today while metering  shadow areas, and it read a 
third of a stop less than without the filter.  So, does that mean my 
filter factor is 1.3?

--shannon
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