Digital BW, The Print

on 4/7/02 3:13 PM, Austin Franklin wrote:

>> That could give rise to a situation where a full tone
>> print could yield the same DyR as one which contained 4 tones.
> 
> That is true, even a print with one tone could have the same dynamic range
> as one with a thousand tones (providing they were printed with exactly the
> same system/paper etc.).  Dynamic range is a measure of what is possible
> within the density range, as limited by "noise", not what only exists.
 
>> That flies in
>> the face of your tone count premise.
> 
> I don't believe so.

Austin

Whelp, I see no reason to go further with this.

I suggest a comparison between a paper that is capable of only four tones,
lets say two highlight tones, and two shadow tones, with no midtones, Vs a
paper that is capable of thousands of linearly written tones throughout. If
the two share the same density range and noise, they will yield the same DyR
formula.

If you are okay with that, and suggest DyR still yields a reasonable
indicator of tone count, and aren't willing to reconcile the obvious breech
of logic, I give up.

I've asked you on several occasions to demonstrate how you would apply your
formula to confusing scenarios, and so far you have not. It's clear we are
at an impasse you are not willing or able to resolve as yet, so until that
time my efforts to understand or to further this conversation will be in
vain.

I look forward to what you have to say in a few months.

Todd