Archived posting to the Leica Users Group, 2000/07/25

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Subject: Re: [Leica] Exposing Tri-X at 320
From: Mark Rabiner <mark@rabiner.cncoffice.com>
Date: Tue, 25 Jul 2000 13:19:10 -0700
References: <200007251445.KAA03071@marconi.concentric.net>

George Lottermoser wrote:
> 
> PetersonAG@NAVSEA.NAVY.MIL (Peterson Arthur G NSSC)7/25/0010:05
> AM
> 
> > had gotten the impression that, conversely, overexposing and
> underdeveloping
> > rather decreases contrast.
> 
> Correct.
> Over exposure + reduced development = decreased contrast
> Under exposure + increased development = increased contrast
> 
> George

Contrast is the densimetric difference between the high and low tones.
If you make your highlights denser though development but then make your shadows
also denser though exposure you haven't effected contrast. You've just added
density. Unneeded density at that.
Mark Rabiner

In reply to: Message from George Lottermoser <imagist@concentric.net> (RE: [Leica] Exposing Tri-X at 320)