Graphics Reference
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Fig. 4.44
Now, drag the same points to the right on the green and blue Curves.
I took the black point of the green curve to 65 and the blue curve to 24.
The image starts to look better and the three cells of the RGB Parade
waveform are much more even ( Figure 4.44 ) .
Grab the upper right corner of the red curve and pull it down just a
little to see if you can get rid of some of the clipping in the highlights. You
don't want to bring it down too low. There are lots of bright whites in
this image, and you need some part of all three RGB channels at the very
top. I ended up bringing the top of the red curve down to 252. Greens
are pretty low. To bring a highlight level up in curves, you need to drag it
to the left along the top, because you can't drag it any higher. Drag it to
the left while watching the highest spot in the middle of the green RGB
Parade cell. Line the high spot on the green channel with the high spot
on the red channel. This point corresponds to the bright white leg of the
bench at the middle bottom of the image. My correction put the top of the
green curve to 230. Do the same thing with the blue channel. My correc-
tion put the top of the blue curve to 240 ( Figure 4.45 ) .
The image is looking even better at this point, but still seems a little
yellow. If you look at the RGB Parade waveform, this yellow tint is evi-
dent by the fact that the red and green channels appear stronger. (And red
N o t e
DaVinci's curves only go up
and down at the extremes.
Shadows can't be dragged
right and highlights can't
be dragged left.
Fig. 4.45
 
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