Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, Jan Barkan <jbarkan@...> wrote:
>
> What is L Star curve mean exactly?

Here are a couple of links to get you started:

http://www.colormanagement.org/en/workingspaces.html
http://www.auspiciousdragon.net/photowords/?p=414
http://www.adobeforums.com/cgi-bin/webx?14@@.3bc19316/4
http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00HhKU

basically, instead of using a simple response curve that can be
described by a single gamma value, it uses a slightly different curve
so that RGB values are proportional to visually perceived change in
lightness - at least that is my understanding.