Richard Week 6 Ex 5: Temple Bridge

This is the discussion board for the December 2010 CM 101 Class.
mikemeister_admin
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Postby mikemeister_admin » Fri Jan 28, 2011 10:44 am

I started in RGB, placed 3 neutrals and then saved the image. I re-opened in LAB and used contrast pinning. I also used a b mask to try to protect the neutrals that I had set in RGB.

Richard
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ggroess
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Postby ggroess » Fri Jan 28, 2011 9:14 pm

If you start from your RGB correction, Which looks pretty good BTW...
Open the RGB correction in CM and ...
Set a hue clock on the bridge to use as a "Home Base"

Make your LAB adjustments and move the linked pins together until the A and B channels match the Home Base hue clock.  See screen shot attached...

No mask needed...

Greg
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mikemeister_admin
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Postby mikemeister_admin » Sat Jan 29, 2011 4:07 pm

Based on your explanations for this example and also for example 4, I think that I am staring to understand. Before curving in LAB, place a hue clock on a neutral to make sure that you don't introduce a color cast, which is all too easy to do.

Here I started with the RGB correction that I had already made, placed several hue clocks and tried to make sure that my color corrections did not introduce a color cast.

Thanks,

Richard
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ggroess
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Postby ggroess » Sat Jan 29, 2011 4:22 pm

Exactly...it did shift a bit... but not too much to make the enhancement worthless...

You need not use a neutral for the "home base" you simply need to know where you want the color to stay the same...It's a modification of the Man From Mars.  In MFM you set a point you do not want changed and rotate the curves around that point. 

Here you select the color you want to expand and make sure that doing so does not introduce a color cast.

Greg


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