Re: Gum tonal range (was Miracle size for gum)
For the sake of clearness I'd add that no one had made such a translation as I understood the conversation. The subject was "what's the *ideal* negative DR" to print gum, and when somebody says "gum prints 2 stops", what I understand personally is that they're making the assertion: "gum need a negative density range of log 0.6", which is obviously a false statement. Gum is so flexible that one can print perfectly from a negative with a density range 0.6, or 1.0, or 1.2, or 1.5, or even 1.8 as Marek shows, (fill the rest and in between), given the necessary adjustments in emulsion formulation / exposure and development are made. That's my whole point - which I'm sure you'll agree. What's best depends on the practitioner and their particular workflow / strategy of preference. Hence the (*)s to mark "ideal" above; there's not an ideal DR in the practical sense. Especially after some amnt. of experience... Regards, Loris. 2009/10/12 Katharine Thayer <kthayer@pacifier.com>: > ... > I was not arguing against the use of step wedges, for heavens' sake; > ... > I was simply arguing against the translation of number of steps, or the > number of "stops" to a print density range by multiplying by .15 or .30. > Hope that point is now perfectly clear. > ...
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