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What's the deal with semi-stand vs intermittent agitation in rodinal? I see all these old guys mumbling about "edge effect" and "contrast index". I've never noticed the first, and I can't reasonably measure the second without a densitometer. I developed some test shots, with 18m Rodinal 1:100, 15 inversions to begin and 5 at the start of every minute, and 48m Rodinal 1:20, 90 seconds constant agitation initially, and 2 gentle inversions every seven minutes. On the emulsion I'm using, the only thing I noticed was a flatter contrast profile (by a bit). The supposed boons in shadow development never arose (though admittedly, may have been my choice in test shot lighting/mise en scene. I'm just trying to get a little more detail in shadows.
