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Change cloudy sky to blue

Jan 24, 2012, 01:05
Post: #1
Change cloudy sky to blue
Have photos from trip to Japan and Grand Tetons that are cloudy. Is there a way to change the sky to blue. I have pictures of only sky I have taken that I thought I might be able to use as a layer or in some other manner. Any ideas would be greatly appreciated.
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Jan 24, 2012, 08:02 (This post was last modified: Jan 24, 2012 08:03 by ofnuts.)
Post: #2
RE: Change cloudy sky to blue
1) You have to understand that the photo will look doctored: under a blue sky there are shadows, and your picture likely missing them.

2) If the sky if overcast (uniform gray), add a layer above, put it in "overlay" mode and paint with some rather deep blue.

3) If there are visible clouds:
- add a an alpha channel to the layer ("Layers/Add alpha channel")
- add a layer below and fill with blue, or better find a better sky to graft (must have proper perspective/light direction).
- add a layer mask to the photo layer ("Layer/Mask/add layer mask")
- make the photo transparent where you want the new sky to show, by painting with black
(see here for an example of layer masks at work). Use a fuzzy brush near the horizon.
- when done, "Layer/Mask/Apply layer mask"

Now answering your questions on
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