Re: Reciprocity and contrast control???


FotoDave@aol.com
Tue, 09 Mar 1999 12:03:42 -0500 (EST)


In a message dated 3/9/99 8:27:44 AM Pacific Standard Time,
tomf2468@pipeline.com writes:

> My experiments with APH have been with Dave's LC-1 development method.
> Using 2:2:6 for LC-1 developer (VERY soft developer) my density range (of
> original neg, intended to fit into an enlarged positive ranging from 0.45
> to 1.05) was 1.0 at 30 seconds, 1.1 at 1 minute and 1.2 at 2 minutes and
> 1.4 at 4 minutes. Using LC-1 at 2:1:7 (a more useful, general low contrast
> developer for enlarged positives) my density ranges were 0.75 at 30
> seconds, 0.85 at 1 minute, and 1.0 at 2 minutes.

Tom,

Thanks for sharing the data with us. The numbers look a little unusual to me,
however. It looks like the 2:2:6 is more contrasty than 2:1:7, but you did
describe 2:2:6 as "VERY low contrast" whereas 2:1:7 as "general low contrast,"
which is how they should be. I think I am not reading your description right
(somewhere I must have read it backward). Could you explain the figures a
little bit?

Thanks in advance!

Dave S



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