Graphics Reference
In-Depth Information
Check some other areas of the same chart. Drag the eyedropper around
the gray background. Check the color of the blackest chip. Check out some
of the colored chips. The ChromaDuMonde series has a couple of colored
chips that represent skin tones. Seeing what the sampled numbers are on
these skin tone chips is valuable information to store away for later.
Seeing what the sampled numbers are on these skin tone chips is
valuable information to store away for later.
To use this information for color balancing, call up the “ChromaDu-
Monde_Warm_chart.” Now sample the “black,” “white,” and “gray” areas of
the chart. You'll see that the numbers no longer are a close numerical match
from one color channel to the next. Now the sampled colors are skewed
with larger numbers in the red and green channel and lower values for blue.
In most color correction apps, you don't get real-time feedback of your
sample as you change it with the color correction app, but Color Finesse
does
update the numbers of your sample as you grade, which is a very
cool thing. The numbers to the left are the original sample values and the
numbers to the right are the result of your correction. You can also com-
pare the right and left color swatches under the eyedropper values to see
“where you took” the correction. If you like eyedroppering as a way to
analyze the image, Color Finesse is probably the app for you.
Sample the black chip in the center of the chart. I got 26 for red, 28 for
green, and 15 for blue. I scrubbed around in the area, and though the num-
bers did change, the blue number was rarely above 16, and even though the
red and green numbers occasionally matched, the green number was usually
slightly higher than red. This indicates that the blacks are slightly elevated
(they should be at 16) and they have a yellowish tint (green and red in nearly
even amounts). The blue channel is actually probably just about perfect.
Now, in Color Finesse's RGB tab, you can call up the red pedestal
slider, pulling down the slider until you get the sampled number for red
down to around 16. Then bring the green pedestal down to 16 as well.
I ended up lowering the green and red pedestal to -0.04 and raising the
blue pedestal to 0.01.
Sample a white chip on the “warm” chart. For me, the sample showed
254 for red, 245 for green, and 186 for blue. This means that the chart is
fairly yellow (both red and green are elevated, making yellow) and that
red is a little higher than green, so it's a reddish-yellow. You can confirm
this finding by simply looking at the chip. So to get a legal level, we need
to bring down the red quite a bit, bring down the green a touch, and raise
the blue levels quite a bit. Let's use our eyes as we do this, or you could
check out the RGB Parade and then resample the chip. Keep at this until
all three color channels read at about 235.
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