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Posted: Sat Apr 18, 2009 12:12 am
by mikemeister_admin
You'll need a rather generous definition of "yellow."


Posted: Sat Apr 18, 2009 12:14 am
by mikemeister_admin
the image

Posted: Sat Apr 18, 2009 12:17 am
by mikemeister_admin
I liked this task because it helped me to understand the a and b curves in Lab.

Posted: Sat Apr 18, 2009 1:28 am
by ggroess
It is actually more simple than you have it...
It should take only 1 move in LAB.

Think Parabola. How about a nice green...
Greg


Posted: Sat Apr 18, 2009 5:14 am
by mikemeister_admin
But...the lesson says, "This requires only one pass in Lab mode, with changes to all three curves."

Posted: Sat Apr 18, 2009 12:41 pm
by ggroess

But...the lesson says, "This requires only one pass in Lab mode, with changes to all three curves."


Jay...

I cannot give it away just yet...I showed you how to make a nice emerald green. 
The yellow is a variation on a theme.

This is one exercise where you really learn the power and speed of LAB please try it again. 
Think color mixing and how would you get yellow out of red??
Or maybe.....

There is a way in HSB....Play around and see what you find....

Greg

Posted: Sat Apr 18, 2009 2:32 pm
by mikemeister_admin
I don't know how to do it with one move in Lab.  But I had some luck with HSB:

Posted: Sat Apr 18, 2009 5:16 pm
by ggroess
Jay,
You kicked it's butt in HSB good work..

LAB is a three move operation 1 on each channel  and youdo not get as good a result.

Posted: Sat Apr 18, 2009 8:34 pm
by mikemeister_admin
I'm enthusiastic after this lesson because I think I understand the Lab and HSB curves now.

Posted: Sat Apr 18, 2009 9:32 pm
by ggroess
Cool..I like it when the light come on...
I'm hoping I had some impact...but I am glad you are getting more comfortable with the other spaces...

Greg