Digital BW, The Print

Austin, et. al.

There are three important scales within the totaal range of exposures that
can be printed. The full range from black to white is represented by Zones 0
to X. Within this range lies the dynanic range, representing the first
useful values above Zone 0 and below Zone X, or Zones I to IX. The range of
zones which convey definite qualities of texture and the recognition of
substance is the textural range from Zones II to VII. (1)

(1) Ansel Adams, The Negative, Little Brown, Nineteenth Printing, 1998.

-Mike


----- Original Message -----
From: "Austin Franklin" <darkroom@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Thursday, March 28, 2002 8:39 AM
Subject: RE: [Digital BW] Dynamic Range Definitions and Print Tones


> Hi Kevin,
>
> > While the heavy weights take a well deserved breather I thought
> > I'd throw in
> > my two cents.
>
> One minor correction, I promise ;-)
>
> > <Geek mode on>
> > Dynamic range has a very specific meaning to people involved in signal
> > processing and designers of optical, audio and many other types of
> > equipment.  That definition is just as Austin has stated.  Dynamic Range
> > (DR) = 10log10 (smallest signal/largest signal).
>
> Er, you mean largest over smallest...
>
> > Having said that, it seems to me that a perfectly meaningful and
> > unambiguous
> > (in any ordinary sense of those words) conversation can be had between
two
> > printers using "dynamic range" and "density range" interchangeably to
> > describe the range of tones produced by an ink/paper/workflow
combination.
>
> OK, I changed my mind, two...  density range does NOT describe any RANGE
of
> tones, it describes the two endpoints only...
>
> Regards,
>
> Austin
>
>
>
>
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