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- Aug 31, 2010
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Yes they change. Diluted developer contains much less sulphite. Sulphite solves back silver an reduces grain and sharpness as well. If you dilute a sulphite-rich dev you get more sharpness and more grain.
By the way, the causality isn´t always as straight as you say. The more you dilute a deveoper, the longer become the development times. Therefore the decreased sulfite has longer time too to solve silver and to reduce the grain. But I read that if the sulfite level falls below some concentration (about 30g per liter) then its solving action decreases strongly.
For instance A49 Tmax 400 (TMY-2) obviously makes an exception to your rule. As I wrote already, I compared A49 at full strength and dilutions 1+1, 1+2 and found no differences in sharpness and grain although I expected it would work grainier and sharper the more I dilute it. In another test I saw that it becomes sharper if you dilute it much more than recommended (1+8). Then it produces coarser grain too. The advantage I got in sharpness was less than the disadvantage in grain. A49 is just no sharpness orientated developer and one can´t change that much. With Microdol-X and Xtol it is probably different.
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