Re: [Gimp-developer] New Image/Color Management option

[Elle Stone <ellestone ninedegreesbelow com>]

On 05/16/2016 11:43 AM, Michael Natterer wrote:
> On Mon, 2016-05-16 at 17:26 +0200, Michael Natterer wrote:
> > > 2. Relabel the option as "Assume this image is an sRGB image".
> > That definitely not, but I will immediately add tooltips saying that
> > it is the same as choosing sRGB.
>
> Done, this should be more obvious now:
>
> commit c0fb1362034fb4da24ee46a677f9833495ee6ca5
> Author: Michael Natterer <mitch gimp org>
> Date:   Mon May 16 17:41:04 2016 +0200
>
>      app: add tooltips that mention that disabling color management ==
> sRGB
>
>      Also say "better leave this enabled".
>
> commit 335727dd267a44ac48fc4fdfa1678f7005fbb50f
> Author: Michael Natterer <mitch gimp org>
> Date:   Mon May 16 17:37:22 2016 +0200
>
>      libgimpwidgets: change the tooltip of GimpColorConfig:mode
>
>      to say "How images are displayed on screen." instead of "Mode of
>      operation for color management.". The old text was never accurate.

I beg to differ. The old text was perfectly descriptive. The new text is 
merely vague.

Before there was ICC profile color management, when a person displayed 
an image on their monitor, what they saw depended entirely on their 
monitor, that is, on the type of phosphors (assuming a CRT) used to make 
colors, combined with the  state of calibration of their monitor.

In other words, before ICC profile color management, everyone edited 
their images in their monitor's color space.

Limiting ourselves to the most basic, practical, applied level of color 
management - ICC profile color management of RGB images displayed on a 
monitor screen requires three things:

1. That the monitor be assigned an ICC display profile that describes 
the monitor's display characteristics.

2. That the image be assigned an ICC RGB working space profile that 
properly interprets (give meaning to) the image RGB values.

3. That a CMM such as LCMS be used to convert the image from the image's 
assigned ICC RGB working space profile to the monitor's assigned ICC 
display profile.

By definition, disabling ICC profile color management means the above 
three-listed items don't happen. Instead the image RGB values are sent 
directly to the screen.

The new GIMP "color management" options are *LYING* to the user.

When making a new image, unchecking "Color manage this image" does *NOT* 
disable color management.

When navigating to "Image/Color Management", unchecking "Enable color 
management" does *NOT* disable color management.

Please find another set of "UI" words for designating these new options.

Or better yet get rid of the new options as they are guaranteed to cause 
a great deal of confusion and misunderstanding among GIMP users.

Best,
Elle