POV-Ray : Newsgroups : povray.general : Gamma 1.0 or Bust! Server Time
12 Aug 2024 11:22:36 EDT (-0400)
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From: Spider
Subject: Re: Gamma 1.0 or Bust!
Date: 16 Mar 1999 20:51:36
Message: <36EF090D.CBC5F717@bahnhof.se>
> Any comments, gang?
> 

One..
#macro.

-- 
//Spider
        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
                "Marian"
        By: "Sisters Of Mercy"


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From:
Subject: Re: Gamma 1.0 or Bust!
Date: 17 Mar 1999 07:20:14
Message: <wbn21ce29u.fsf@tycho.oslo.infostream.no>
[On Tue, 16 Mar 1999 14:10:40 -0600, Bob Hughes <inv### [at] aolcom>]
| The "traditional" still looks more right to me though. The "new color
| scale" jumps from black to mid-gray it seems.

This might be because your monitor is gamma corrected, which is where
gamma correction should happen anyway. In the monitor and through
graphics card drivers. Hardcoding gamma into images just to make sure
they look ok on an ancient 2.2 gamma monitor is IMNSHO sick and WRONG.

-- 
A penny for your thoughts.
Mine are more expensive.


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From: Lance Birch
Subject: Re: Gamma 1.0 or Bust!
Date: 17 Mar 1999 16:43:11
Message: <36f021ef.0@news.povray.org>
My thoughts exactly...

Shouldn't the monitor makers be the ones doing gamma correction?  After all,
they ARE the ones MAKING them!!!  Surely a monitor with no gamma correction
is just an inferior display device right?

--
Lance.


---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone


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From: Steve
Subject: Re: Gamma 1.0 or Bust!
Date: 18 Mar 1999 09:13:41
Message: <36F10AA9.CBBB89CA@puzzlecraft.com>
Which gamma would you have the monitor manufactured to? The one that matches
your printer or mine? Should it match an IRIS printer or a Heidelberg offset
printing press? Should it match a Canon Color Copier or a transparancy
imagesetter?

The monitors must be adjustable in a highly controlled way or they are useless
for professional work. We have to set the monitor's gamma to match the output
of the job we are doing and we have to be able to change it for different
output targets. We have to fine tune it for local environmental variables.

Even using preset color profiles is not good enough - for instance each brand
of dye sublimation printer yields different color - even the same printer will
give varying results from different batches of film from the same manufacturer.

For highly detailed information on color calibration, densitometry and
sensitometry, I refer  to the extensive research available from the Graphic
Arts Technical Foundation.





Lance Birch wrote:

> My thoughts exactly...
>
> Shouldn't the monitor makers be the ones doing gamma correction?  After all,
> they ARE the ones MAKING them!!!  Surely a monitor with no gamma correction
> is just an inferior display device right?
>
> --
> Lance.
>
> ---
> For the latest 3D Studio MAX plug-ins, images and much more, go to:
> The Zone - http://come.to/the.zone


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From: John M  Dlugosz
Subject: Re: Gamma 1.0 or Bust!
Date: 18 Mar 1999 21:40:41
Message: <36f1b929.0@news.povray.org>
Spider wrote in message <36EF090D.CBC5F717@bahnhof.se>...
>> Any comments, gang?
>One..
>#macro.


What about macros?


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From: Lance Birch
Subject: Re: Gamma 1.0 - I WISH!
Date: 19 Mar 1999 04:29:25
Message: <36f218f5.0@news.povray.org>
Yes, I know what you mean, but my point was that all monitors should be
configured to a specific gamma (or as close as possible) in the factory, at
least this way people have ONE value to work from...  This way, even though
other output devices would differ in gamma (which is inevitable, because of
different types of media), it would make it easier to correct it using
software, because the gamma of the monitors are constant... After all, you
aren't meant to adjust your monitor's gamma just for the type of output,
it's meant to be the constant, the output is meant to be the variable.

Have you ever tried using a computer with two monitors and they have
different gammas?  It's very frustrating when you make an image in one app,
then drag the app onto the second screen and it looks TOTALLY DIFFERENT!!!!!
AAAGGHHHH!!!!!

Oh well, I guess we'll just have to put up with an endless life of gamma
hassles... I need a Pogle Platinum Digital Colour Processor......  :(

he he he

If only everything was Gamma 1.0... ;-)

--
Lance.


---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone


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From: Lance Birch
Subject: Re: Gamma 1.0 or Bust!
Date: 19 Mar 1999 04:33:02
Message: <36f219ce.0@news.povray.org>
>>> Any comments, gang?
>>One..
>>#macro.
>What about macros?
They're cool, not that it has anything to do with the subject...


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From: Lance Birch
Subject: Re: Gamma 1.0 - I WISH!
Date: 19 Mar 1999 04:37:50
Message: <36f21aee.0@news.povray.org>
Hmm, come to think of it, that means all monitors would have to be the
same... even in the way they're made...

Oh well, guess that won't work... back to trying to print in RGB... ;-)

--
Lance.


---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone


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From: Spider
Subject: Re: Gamma 1.0 or Bust!
Date: 19 Mar 1999 09:30:18
Message: <36F254E5.3C8CA06B@bahnhof.se>
What I meant, but was way to laxy to say was to make it a macro, not a
lookup-array...


Lance Birch wrote:
> 
> >>> Any comments, gang?
> >>One..
> >>#macro.
> >What about macros?
> They're cool, not that it has anything to do with the subject...

-- 
//Spider
        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
                "Marian"
        By: "Sisters Of Mercy"


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From: John M  Dlugosz
Subject: Re: Gamma 1.0 or Bust!
Date: 24 Mar 1999 23:58:36
Message: <36f9c27c.0@news.povray.org>
I thought about that too -- a function-like macro to translate a floating
point number from 0 to 1 in
human vision space into flat gamma space.  But I figured it would be rather
slow going to have that
in all the include files.  I don't remember now if there was a more
compelling reason, but I figured
that 15 pre-made values would be enough for most uses.

--John

Spider wrote in message <36F254E5.3C8CA06B@bahnhof.se>...
>What I meant, but was way to laxy to say was to make it a macro, not a
>lookup-array...
>
>
>Lance Birch wrote:
>>
>> >>> Any comments, gang?
>> >>One..
>> >>#macro.
>> >What about macros?
>> They're cool, not that it has anything to do with the subject...
>
>--
>//Spider
>        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
>What I can do and what I could do, I just don't know anymore
>                "Marian"
>        By: "Sisters Of Mercy"
>
>


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