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Old April 27th, 2017, 03:30 AM   #1
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Measure pixel values?

I'm trying to learn how to color correct properly in Final Cut X.

I'm a photographer and what is puzzling me is that I haven't yet found a way to measure pixel values. I can see, through the scopes and the color correction adjustment, how to adjust the color, exposure, and saturation. But everything seems to be a matter of "eyeballing" the preview and the the scopes.

Is there a way to actually measure the values--to get RGB values?

For example. In the attached frame, I would I ensure that the stainless steel is neutral? How would I convince myself that the yellow is not tainted too much with green?

I'm puzzled! :)

--Darin
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Old April 27th, 2017, 03:59 AM   #2
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Re: Measure pixel values?

Digital Colour Meter in your Mac Utilities folder?
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Old April 28th, 2017, 07:47 AM   #3
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Re: Measure pixel values?

ColorGradingCenteral's Color Finale Pro does this.

http://try.colorgradingcentral.com/colorfinale/
It also adds curves which you might be used to as a photographer.
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Old May 14th, 2017, 08:35 PM   #4
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Re: Measure pixel values?

Hi Craig.

If you don't mind my asking, have you used the feature inside Color Finale which works with the X-Rite ColorChecker Video Passport?

I saw this demo:


and it looks like it could save quite a bit of time. Because the physical ColorChecker itself will cost me about A$200 and Color Finale Pro also costs A$200, I thought I'd check first if someone such as yourself has used it and found it to work as advertised.

Thanks.
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Old May 15th, 2017, 01:45 AM   #5
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Re: Measure pixel values?

Hi David,
I use it, and I can confirm that it works as advertised, and is a great time saver to get a grade started, and sort color balance issues, and even better for matching two cameras.
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Old May 15th, 2017, 04:25 PM   #6
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Re: Measure pixel values?

Thanks for that, Paul! I've just ordered the video passport colorchecker from B&H.

Quote:
Originally Posted by Paul Wood View Post
and even better for matching two cameras.
I'm intrigued by that comment, because I'll soon be trying to match footage from an EX1R with a new Z150 (both Sony cameras). Does that mean that you simply do the one-click in Color Finale to separately balance each (and this means they should match) or is there a special function within the Color Finale software which directly matches cameras? (I hope this question makes sense.)

Thanks.
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Old May 16th, 2017, 01:37 AM   #7
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Re: Measure pixel values?

No special function, but a common colour reference - assuming you remember to include a shot of the chart from both cameras!.

I use different model Sony cameras, and always had problems matching colour, but shooting the chart makes it much easier - Denver has some free tutorial material on his site which helps a lot.
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Old May 16th, 2017, 04:34 PM   #8
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Re: Measure pixel values?

Thanks for the excellent info, Paul.
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