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Digital BW, The Print

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

Message

Re: [Digital BW] Tonal range recording

2004-11-24 by Steve Kale

Thanks.  OK I think I am beginning to understand this stuff a lot more by
going through Noreman Koren's pages. I found "Why Gamma?" on this page to be
very helpful in relating film to photographic paper, and also for thinking
about the whole process of linearisation a print curve (printing a step
wedge, measuring it and linearising it).

http://www.normankoren.com/makingfineprints1A.html

My maths is very rusty though - I haven't done log math since highschool.
As a result I am stuck on the following sentence:

"One unit on a Log10 scale (such as Density) equals 3.32 exposure zones
(f-stops)."

Any help appreciated.

Steve

> From: "Nunan, Mike" <mike.nunan@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Wed, 24 Nov 2004 17:30:29 -0000
> To: "'DigitalBlackandWhiteThePrint@yahoogroups.com'"
> <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] Tonal range recording
> 
> 
> Hi Steve,
> 
> It's still 12-bit, just like the 1Ds, 1DII, 20D and for that matter even the
> humble 300D/D-Rebel:
> 
> http://consumer.usa.canon.com/ir/controller?act=ModelTechSpecsAct&fcategoryid=
> 139&modelid=10598
> 
> HTH
>

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