On 11/05/2010 10:20 PM, Robert LeBlanc wrote:
> I wasn't able to make the meeting. Did anyone record it or take really good
> notes that they are willing to share?
I didn't take really good notes, but here are a few things I remember:
- Colors/Curves menu item:
- Use "value" to adjust the levels for all the colors together.
- Adjust drag ends of the curve to adjust bracketing
- Mostly work with 2 spots, 1/3 and 2/3 across the curve
- click to add more points, drag points to ends to remove
- Pull the left 1/3 down a bit and the right 1/3 up a bit often works
well.
- Move mouse over picture and click to find out where in the curve
those pixels likely are (for example, sky)
- For canyon pictures you can adjust the Red and Green channels to
restore color. Pulling Red down adds cyan and pulling Red up
removes cyan. Green -> magenta. Pulling both up adds yellow,
making pictures appear more sunny.
- Generally don't mess with blue (it's opposite of Red and Green
anyway
- Colors/Components menu
- to simulate a polarizer filter and to increase color saturation,
which removes color "poop" as he calls it, select "decompose"
- decompose into HSV layers
- turn off the Hue layer visibility and select the saturation
layer
- darker shades are less saturated
- in colors/curves, in the value channel, pull up the bottom part
- select colors/components/recompose to apply the changes back
to the original image
- If you want to fix up just part of an image, you can select it with
the little rope tool. I don't remember the whole process, so someone
could step in here and correct me.
- select/feather the selection, 50-100 pixels depending on image
size
- In the Layers, Channels, Paths window, select channels (the rgb
stack icon)
- right-click and add new channel, from selection
- right-click and choose channel to selection?
- click back on the blue channel (twice to make sure it's still
selected)
- use colors/curves to adjust things
- delete the channel?
That's the basics. Hopefully someone can fill in the last part.
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