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Blue Sky and White Clouds

Aug 2, 2012 10:42 AM

How can I delete a blue sky and white clouds in the background of a picture?

 

I am using Adobe Photoshop CS6

 
Replies
  • Currently Being Moderated
    Aug 2, 2012 10:49 AM   in reply to twtybrd678

    Could you post the picture? There are many methods to do this, some are easier than others, but which method you select depends on the photo.

     
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  • Noel Carboni
    23,534 posts
    Dec 23, 2006
    Currently Being Moderated
    Aug 2, 2012 10:54 AM   in reply to twtybrd678

    Yes, an image is always helpful.

     

    But it sounds like a masking job in general...  This video gives good info on masking:

     

    http://tv.adobe.com/watch/the-russell-brown-show/masking-basics-in-pho toshop-cs5/

     

    -Noel

     
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  • Currently Being Moderated
    Aug 3, 2012 8:03 AM   in reply to twtybrd678

    Try "Color Range...". It's in the Select menu, and it can be accessed in Properties panel when a mask is targeted.

     

    With nothing selected, add a mask to the image - it'll be white so everything shows. In Properties panel, click "Color Range...". In the CR window, set the dropper to "+" mode and tick the invert box. Click a few places in the sky until the sky is blacked out in the mask. Experiment with the Fuzziness slider.

     

    The mask will need some editing and feathering of edges, but CR will do most of the work.

     

    This took a few seconds and obviously is not good enough. You won't want gray patches in the mask causing semi-transparency.

     

    Screen shot 2012-08-03 at 15.06.00.png

     

    color range.png

     

    Screen shot 2012-08-03 at 15.07.55.png

     
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  • Currently Being Moderated
    Aug 5, 2012 8:57 AM   in reply to twtybrd678

    Quick Selection Tool applied to trees then either:

    a) Add Mask followed by "Refine Mask...", or

    b) "Refine Edge..." followed by Add Mask.

    You'll want to invert the mask, of course, to hide the trees.

     

    If working in 16-bit per channel mode, "a)" can create finer gradation in the mask, but it wouldn't be a significant difference in this particular case.

     
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  • Noel Carboni
    23,534 posts
    Dec 23, 2006
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    Aug 5, 2012 3:10 PM   in reply to twtybrd678

     

    LightsAtNight.jpg

     

    -Noel

     
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  • Currently Being Moderated
    Aug 6, 2012 12:46 PM   in reply to Noel Carboni

    Noel,

     

    That looks like a "Close Encounters of the Third Kind" image

     

    A dead calm night, suddenly the stoplights are swinging wildly and flashing randomly, Then a sudden shoosh and something shoots across the sky!

     
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  • Noel Carboni
    23,534 posts
    Dec 23, 2006
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    Aug 6, 2012 2:57 PM   in reply to Bo LeBeau

    I missed a trick - I should have animated a saucer flying across it.

     

    There's a galaxy (M104, the "Sombrero Galaxy") that when made small looks a bit like a flying saucer.  I animated that once for use as an avatar on an astronomy forum...

     

     

     

     

    -Noel

     
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  • Noel Carboni
    23,534 posts
    Dec 23, 2006
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    Aug 7, 2012 6:42 AM   in reply to twtybrd678

    Thank you, twtybrd678, that's nice of you to say.

     

    -Noel

     
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  • Currently Being Moderated
    Aug 7, 2012 8:06 PM   in reply to Noel Carboni

    Noel,

     

    My favorite galaxy is M31, the Andromeda Galaxy.

     

    I remember one time when I was a kid and drowsing in church when my father the minister mentioned "the Great Galaxy of Andromeda" during a sermon.

    Whoa, did I snap to attention! I didn't even know he knew anything about space & astronomy.

     

    Oh well, it's our fate to collide in 4.5 Billion years.

    Andromeda1200x900.jpg

     
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