steve week 3 window

[sjordan93436]

Oops, I never posted my stuff on this example.  I was looking at the video solution.  Mike said that only RGB can have multiple neutrals.  CMYK does too. 

I did this example in CMYK. 

[ggroess]

Not too bad for a CMYK rendition...
If you want take a second pass at it and run it through LAB for a 1.15 Saturation boost and work on the highlight threshold a bit...the contrast improves and the color is pretty stable.

Greg

[sjordan93436]

Is this better? 

[sjordan93436]

When I use wg cmyk, the white point works fine.  It moves the top of the cmy points down. 


Setting a black point in cmyk is problematical.  How much K?  etc etc.  You can move the master curve, but I feel it is better in LAB or RGB.

[ggroess]

That is because the K channel relates to Ink on Paper not brightness on the monitor.  the true blacks hit the wall faster because you have CMY added to the K channel to make up the Blacks.  In Lab you are dealing with actual L values and not a calculated value for ink on paper...

The GCR setting has the greatest effect on the K channel; try different GCR settings to see if you can find the right one for adjusting the Blacks more smoothly.

Greg