From: Shannon Stoney (sstoney@pdq.net)
Date: 02/05/03-01:05:13 PM Z
Richard wrote:
>I may be misunderstanding the situation, but I thought self masking was
>relatively easy to test. Simply use a step wedge and overexpose.
>A self masking process will give a series of low contrast
>steps at the "shadow" end of the scale.
This is what I was talking about, if I understand you correctly. I
expose cyanotypes until the step wedge shows steps 1-5 reversing, and
step 6 not reversed. Is there some practical reason to worry about
whether this is technically self-masking or not?
--shannon
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