Yahoo Groups archive

Digital BW, The Print

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

Message

Re: Correcting exposure for Gray Gamma 1.8

2005-03-18 by Johnny Eades

I want to thank everyone who shed light on my misunderstanding simple 
numerical interpretation. I had a hard time getting my mind to relate 
the differing numbers. I was attempting to make something hard out of 
something that really was only different ways of displaying the same 
thing. Middle gray is middle gray. The actual numbers displayed as 50%
K and 128.128.128 (RGB) or 145.145.145 (GG1.8) mean the same. 
Sometimes I get hung up on details like that which I feel the need to 
understand more completely. I'll just keep working now....

Your friend in Photography,

Johnny


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Tyler Boley" 
<tyler@t...> wrote:
> 
> I believe the original question has to do with the effect of monitor
> gamma choice.
> The answer is no, whatever number you decide is middle gray has
> nothing to do with which monitor gamma you have chosen to use.
> Photoshop will display that gray the same on a 2.3 gamma monitor or 
a
> 1.8 gamma monitor assuming your color settings are correct. It knows
> via the monitor profile how to adjust that gray before sending it to
> the display.
> Leaving the rest of all this aside, do not rethink gray numerical
> values because of monitor gamma choice.
> Continue working...
> Tyler
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny Eades"
> <jeades1@s...> wrote:
> ...
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny 
Eades" 
> > <jeades1@s...> wrote:
> > > 
> > > My monitor is calibrated for Gray Gamma 1.8, so I should be 
making 
> > my 
> > > exposures so that middle gray should read on the monitor as RGB 
> > 145. 
> > > Is that correct?...

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.