|
|
|
|
|
|
|
|
Re: Pyro Developers Question.From: jeandavid8@verizon.net (Jean-David Beyer) On 9 Aug, 07:32, "Nicholas O. Lindan" <s...@sig.com> wrote:The subtleties of how the tones (reflectances) change within an image are shown perfectly well in the D/H curve of the printing system, from subject to negative to positive print. And these things are measurable with a spot-meter, a transmission densitometer, and a reflection densitometer, respectively. When looking at a print, the human eye replaces the reflectance densitometer, of course. But I fail to see how "more tonality" can mean anything. The difference between the minimum and maximum density of a print can be changed a bit by technical means, and that could mean something. The average slope of the D/H curve can be changed by changing the development time (contrast adjustment). So you could have more lightness, more contrast, etc. But those are not so much subtleties as normal results of the photographic process. Changing the fundamental shapes, such as the contrast in the toe, the "straight line", and the shoulder of the print might be subtle, to the extent that it can be accomplished, but there you really need to illustrate what you mean by showing the curves themselves. "More" or "less" are meaningless in this context. -- .~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key: 9A2FC99A Registered Machine 241939. /( )\ Shrewsbury, New Jersey ^^-^^ 07:15:01 up 8 days, 10:34, 3 users, load average: 4.80, 4.91, 4.93
|
