Color Picker: Ctrl+Alt+click should sample color from the input of the viewed node

[devernay]

From @Montaire on February 9, 2015 19:11

In nuke there is a hotkey to sample the source image instead of the visible one.
It would be nice to have one here too.

Copied from original issue: MrKepzie/Natron#454

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

[devernay]

From @MrKepzie on February 9, 2015 22:37

Care to elaborate with maybe a screenshot ? Are you talking about the color picker ?

[devernay]

From @blackearth2014 on February 9, 2015 23:51

One operation for example of what Montaire is talking about is when using the Grade node. When you are mapping the black and white points, you have to disable the node once you mapped the black point. The white points gets slightly shifted and can remap the white point to a different hue. This is especially necessary when generating contrast or expanding saturation of a image that looks like was was captured in log space or the codec compressed the color range. Canon and Panasonic has a feature called cine style in their cameras that compresses the shadows and highlights into the midrange because of the details the AVCHD throws away. It's not perfect but it makes a difference of small cameras.

[devernay]

From @Montaire on February 10, 2015 13:33

Here I sampled the picture with Ctrl Alt Shift. So the average in the box is not blue, but purple.

[devernay]

From @MrKepzie on February 10, 2015 15:54

What if there are multiple readers upstream ?

[devernay]

From @Montaire on February 10, 2015 16:7

Really good question.
It seems nuke simply does nothing.

[devernay]

keystroke should be Ctrl+Alt+click (Ctrl+Alt+shift+click for a rectangle)
marked MrKepzie/Natron#1371 as duplicate