Last W-E, I discovered that the Value Curve is in fact applied independantly to
each of the R, G & B channels. Pretty useless since using a non-linear Value
Curve is going to change the HUE channel.
Today, I experimented with different tools and I found that the Contrast tool
has a very unusual behavior.
I tried different tools (Krita, OpenOffice, Cinepaint) and they all handle the
contrast the same way. Basically, reducing the contrast is like adding a grey
mask to the image.
The Contrast tool in gimp is very different.
This is the original image:
This is what Cinepaint produces when I reduce the contrast. So far so good:
And this is what I get with Gimp:
What do you think?
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