Fixing cyan skies

How do I turn this sky into blue, using LR or Capture One Pro ?

Tried playing with Hue slider but I don't seem to be very successful.

http://help.phaseone.c​om …-colors/Color-editor.aspx

drop the lightness and maybe change the color angle. depending on your image you might need to make a mask.

btw, your image isn't showing up.

The app I used to grab photo image BBCode on iPad only works with Original resolution... fixed.

The ligthness is OK, what bugs me is the color of the sky, it's cyan instead of blue.

Perhaps I should mask out the sky and desaturate greens ?

One way to go is select a nice sky color and paint over it with a saturation mode brush... for example...

Benitoite wrote in post #17802009
One way to go is select a nice sky color and paint over it with a saturation mode brush... for example...

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Sorry but it looks even more unnatural, to my eyes.

The sky is simply wrong color.

Here's what I consider a more "correct" sky color under similar lighting conditions (evening / dull / overcast)

i think what you are seeing is kind of an optical illusion due to incorrect color balance in the picture. I think if you warm it up a bit, the sky will look more blue due to color contrast between foreground and the sky. It might not be just like you like it but it is definitely where I would start.


for instance the yellow tower in the original is not really yellow, and the asphalt is quite blue/cyan

Amamba wrote in post #17802037
Sorry but it looks even more unnatural, to my eyes.

The sky is simply wrong color.

Here's what I consider a more "correct" sky color under similar lighting conditions (evening / dull / overcast)

I picked a random color for the sky, your milage may vary...

Left Handed Brisket wrote in post #17802058
i think what you are seeing is kind of an optical illusion due to incorrect color balance in the picture. I think if you warm it up a bit, the sky will look more blue due to color contrast between foreground and the sky. It might not be just like you like it but it is definitely where I would start.


for instance the yellow tower in the original is not really yellow, and the asphalt is quite blue/cyan

Yes, I missed that.

So I warmed it up, and edited sky color to reduce green in Cyan. I like the end result.

Unfortunately, this means every instance of "cyan skies" has to be addressed separately.

Some skies are naturally cyan. Truth be told, I prefer the very first capture: the building stood out more.

Now here is a cyan sky, not necessarily naturally cyan, but probably cyan-i-er than reality. Perhaps the haze/smog contributes to the color cast on sky.

If you want to decrease the amount of cyan, add the opposite (red).

Bcaps wrote in post #17802826
If you want to decrease the amount of cyan, add the opposite (red).

You could also subtract cyan as in paint over the sky with a subtraction brush...
Either way definitely eliminates cyan, but doesn't necessarily bluify it.

Benitoite wrote in post #17802823
Now here is a cyan sky, not necessarily naturally cyan, but probably cyan-i-er than reality. Perhaps the haze/smog contributes to the color cast on sky.

The overly cyan color in the mountain landscape looks like it is due to channel clipping.

If you are going to manipulate the color of the typical "blue" sky then it should be mostly blue with a slight lean, if any, toward green (blue + green = cyan) versus toward red (blue + red = magenta or purplish). Typical blue skies are not purple.

In the OPs image, there is also the issue of trying to figure out what the prevailing lighting conditions were - that is, the image appears to have been shot in overcast (or at least cloudy) conditions in winter late afternoon or evening - if the sun is still somewhere above the horizon, then the sky might actually be very different from blue or cyan - for example, it may be orange, or red. There is enough ambient light that the cars and people walking in the image are not showing motion blur (or they are all stationary!) so there is likely still sunlight lighting the image.

In the attached images, I made a slight "correction" on the image from cyan-ish toward more blue. In the second image, I assumed that the roadway was neutral and used RGB curves to neutralize the roadway. Completely different feel, but possibly more accurate? If the second image is actually more indicative of the prevailing light, then trying to make the scene "cold" is a purely artistic exercise and may not look right regardless of which blue you settle on, simply because the scene was not lit by blue light to begin with. You can also bend the two edits with the original to achieve a reasonable look to the final image, but doing so will require a trip outside of Lightroom.

kirk

Here is a 60% (orange image) 40% (blue image) blend, with the orange image blended in "Color" blending mode.

kirk

Interesting edit.

The road can't be completely neutral, it's wet and reflects the sky, so it should be somewhat bluish.