In article ,
(CWal871581) wrote:

If the yellow filter was put on and zones I to X were shot (at the EI
determined
by a no filter test), and then the film was processed using what the no filter
test determined to be the correct time and agitation, what is the predicted
change in the density in the shots that used the filter?

TIA,
Curtis

You can use a mathmatical formula to determine the approximate
density but using the filter and reading each zone or steps on a wedge
etc is prbably more accurate.
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