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Re: Pyro Developers Question.
From: dickburk@ix.netcom.com (Richard Knoppow)
"Jean-David Beyer" <jeandavid8@verizon.net> wrote in message
news:i4j4gl02lfv@news3.newsguy.com...
IanG wrote:
On 9 Aug, 07:32, "Nicholas O. Lindan" <s...@sig.com>
wrote:
"Jean-David Beyer" <jeandav...@verizon.net> wrote
What does "more tonality" mean?
Nothing.
"Tonality" as applied to photography and as
near as I can tell means the writer, using
developer X and film Y, made some
photos he liked .
"More Tonality" means he "more liked" his
photos.
"Tonality" is a word that should be removed
from the language. We don't have "colorality"
or "tastality" and have never missed them.
I think. I hope. Better check.
Oh dear, "tastality" comes up with 14 hits,
"colorality" 47. Thankfully used in a
mocking context ...
I think we can say that negatives developed
in Pyro have more "Pyrality" and leave it
at that.
--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
n o lindan at ix dot netcom dot com
If you don't understand the word Tonality I suggest you
think about
the subtleties of of how tones change within an image,
it's not
measured with a densitometer, it's not scientific and
it's more
important to image quality.
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
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This is the kind of rubbish one finds in high end
audio. The claim that something can be sensed but not
measured. Since your senses _are_ measuring things any
difference that can be seen or heard can be measured. To say
otherwise is to deny the lessons learned from the entire
history of science. There is a perfectly enormous amount of
valid material on tone reproduction in photgraphic processes
in the literature. I strongly suggest people who want some
real understanding read some of it.
--
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com
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