Digital BW, The Print

Bruce,

Exactly.  Well put.

Steve Gledhill

www.virtuallygrey.co.uk <http://www.virtuallygrey.co.uk/> 

 

 

 

From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Bruce
Watson
Sent: 07 October 2008 22:55
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: Subject Brightness Range - branch from [Digital BW] Re: Getting
reasonable scan file sizes w/ MF & LF ...


I think y'all are over thinking this. What scanners do is convert the 
density range they see on the film to the digital range they have 
available. That's all that's going on here. The scanner doesn't have any 
idea what the SBR was at the original scene. None. All it knows, ALL it 
knows, is the density range of the film it's scanning.

If I can put 17 stops of SBR into a density range of 3.0 on the film, 
the scanner will convert it correctly to it's digital range of 0-65535 
(assuming it can read through that much density of course). If on 
another film I put that same 17 stop SBR into a density range of 1.8, 
that too will be scanned into a digital range of 0-65535.
--
Bruce Watson 



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