what method to average out alternate bands of blue then turquoise in sky

[Merlin3]

Hi, screen capture from a flight sim of a sky, and after use of levels to make the clouds a bit more bright, noticed the blue sky graduating down from darker blue to horizon had bands of blue then turquoise-blue then blue etc repeating and getting lighter, so reached for blur tool, did nothing at all, yet blurred the clouds, so added noise, all it did was blur the noise but not the banding. .

do a test, drew alternate sprays of blue and purple, overlapping , tested it, did nothing. 

Just how does one blend those alternate bands together keeping the progression from darker blue to lighter blue ?

Blur tool seems limited, it wont blue solid colours as per my test.

try it for yourself.

No tool we tried made a scrap of difference. Photoshop beaten by a sim sky with banding, eh what ?

Merlin

[Stephen Marsh]

Please post a sample, or at least an area, cropped is OK, but don't resample.

[mglush]

Hi Merlin,

What is the color bit depth of your image? If it is 8 bit—you have run up agains trying to get a smooth gradient from 256 shades of blue and Photoshop is trying to interpolate the color. As Stephen suggested above, it would be great to see a screen shot of your window, panels, and image so we can give you some ideas to fix it. Did you try creating a gradient between two colors of blue and then using one of the blend modes to overlay it onto the image? Also, how was the image shot?

Michelle