[pure-silver] Re: multigrade paper is amazing

This email is a joke... right?


----- Original Message ----- From: "Shannon Stoney" <shannonstoney@xxxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Thursday, November 08, 2007 1:16 PM
Subject: [pure-silver] multigrade paper is amazing


I just did an interesting experiment. I printed a stouffer step tablet on Ilford warmtone multigrade paper, beginning at #00 filtration and ending at #5 filtration. I found out that the paper scale varies not a little bit, but a whole lot!

After printing the step tablet, I read its values on a densitometer. I found out that at filtration #00, the paper has a scale of 1.5. It printed about 12-13 steps between say zone 3 and zone 7. On the other hand, at filtration #5, it had a scale of only 0.47 and printed only 4-5 steps between zone 3 and zone 7.

This is pretty amazing to me. How does it do it? I know that it has something to do with the layers of emulsion. But still.

--shannon

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