Digital BW, The Print

I forgot to point out the very important fact that my duplicate file 
was 8-bit.

Chris


--- In DigitalBlackandWhiteThePrint@y..., "tzinzunzan2000" 
<ldmr@c...> wrote:
> First, some questions. By 'combed' histogram do you mean only a 
> histogram that contains gaps all the way from bottom to top or do 
you 
> include those those histograms which are slightly 'combed', meaning 
> those that have a base throughout most of the histogram but have 
very 
> narrow (comblike) peaks and valleys? Also, very roughly speaking, 
how 
> bad does this combing effect have to be before it manifests itself 
in 
> output? Second, an observation. I took a greyscale tiff file 
scanned 
> from my SS4000, opened the file as 16 bit in PS, duplicated the 
image 
> and then loaded the same two curves into each image. I got the same 
> histogram changes for both images. Won't hazard to guess the 
> significance of this. Also, I've noticed that sometimes if hit the 
> Auto Levels button I get regularly spaced bottom-to-top gaps in the 
> histogram. 
> 
> --- In DigitalBlackandWhiteThePrint@y..., "Maris V. Lidaka, Sr." 
> <mlidaka@a...> wrote:
> > Yes - that is precisely the cause of the 'combed' histogram.
> > 
> > Maris
> > 
> > ----- Original Message ----- 
> > From: "mtucker508" <mark@m...>
> > To: <DigitalBlackandWhiteThePrint@y...>
> > Sent: Wednesday, December 05, 2001 9:25 AM
> > Subject: Re: [Digital BW] 16-bit Scanning: Why?
> > 
> > 
> > | --- In DigitalBlackandWhiteThePrint@y..., "Austin Franklin" 
> > | <darkroom@i...> wrote:
> > | > What happens when you make tonal adjustments with 8 bits is 
> > | you loose tonal
> > | > values. 
> > | 
> > | 
> > | Would these tones "moving around" and getting shifted be 
> > | responsible for a histogram that had holes in it? (Not that 
I've 
> > | ever had one, but a friend of a friend told me that *they* had 
> > | some missing areas in *their* histograms...
> > | 
> > | If this is the case, then you certainly have my full-on 
attention.
> > | 
> > | Mark
> > | 
> > | 
> > | 
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