Digital BW, The Print

I would work in Lab Grey - then the number displayed is K=50 and L=50. Nice
and easy.  And L=50 is Kodak grey or 18% reflectance to boot...


> From: Johnny Eades <jeades1@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Fri, 18 Mar 2005 03:46:53 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] Re: Correcting exposure for Gray Gamma 1.8
> 
> 
> 
> 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?...