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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

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Re: RGB or grayscale to film recorder

2006-11-20 by bwinkjet

Hi Mark,

If the BW conversion results in R=G=B, then all three channels are the 
same, i.e., contain the same information.  You can prove this to 
yourself by turning each channel into a layer and compare 
with "difference" in the layers palate.  The difference in information  
is prior to conversion to BW, but once it is R=G=B any channel is equal 
to the converted Gray scale file.

Paul

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Mark Savoia 
<mark@...> wrote:
>
> I know this is a bit off topic but just wanted to get a feel what  
> most people think is the correct file to send to a film recorder 
when  
> a black and white neg is being output. Does a 8 bit RGB file (with  
> lack of color in it) have more "information" in it then a 8 bit  
> grayscale image? I know it will be a smaller file size but is there  
> info in an RGB file that would help to make a better black and white  
> negative? The software RIP for the film recorder will take either.
> Mark
>

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