Digital BW, The Print

----- Original Message -----
From: "Austin Franklin" <darkroom@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Wednesday, March 27, 2002 7:18 AM
Subject: RE: [Digital BW] Dynamic Range Definitions and Print Tones


(snip)
>
> Hi Larry,
>
> Yes, but Martin's explanation and understanding are incorrect.  Taking two
> measurements and subtracting them gives you a STATIC range, NOT a DYNAMIC
> range.  Using the term dynamic range as Martin has, and you state above is
> simply incorrect.  Why NOT use the correct term "density range"?

Austin,

They are not my explanations they are the commonly accepted definitions by a
wide range of people in many fields. I do not see the need to reinvent these
meanings. Dynamic range is a ratio but subtracting log values is
mathematically the same as taking the ratio. I don't see the need to
reinvent the math either.
>
> As has been shown, you can have a very high density range (a high black
> value on a very white paper, with no intermediate tones) and that has a
very
> LOW dynamic range, because there are no tones in-between.  Don't let this
> simple concept slip by...it's important.

Where in the definitions was this stated? Dynamic range tells you nothing
about the number of intermediate values.

Martin