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underwater wreck
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Registered: July 2006
Location: SoCal
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Remembered this one after doing color corrections on a bunch of underwater photos taken through a tourist submarine window, so I thought I'd give it a try.

In Adobe Camera Raw 4.3.1:
-first-cut adjustment of white balance using the bubbles for neutral reference
-adjusted recovery slider and black slider to tweak exposure

In Photoshop CS3 10.0.1:
-used curves adjustment layer to set white/black/gray values
-added masked selective color adjustment layer to turn ship rusty brown. Mask was inverted blue channel with contrast increased significantly. Adjusted neutrals by reducing cyan about 10 points, increasing yellow about 25.
-used unmasked selective color adjustment layer to fix water color. For blues increased cyan to 100, reduced magenta by about 60, then tweaked whites (cyan -3, yellow +5) to undo the color shift that showed up in the bubbles.
-since the water was still not cyan enough, duplicated the last adjustment layer at 45% opacity
-added a last curves adjustment layer set to luminosity, pulled the rgb composite curve slightly at the midpoint to increase contrast in the dark tones.
-applied a modest unsharp mask.
· Date: 1/7/2008 · Views: 5280 · Filesize: 26.0kb, 189.4kb · Dimensions: 780 x 585 ·
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Keywords: retouching challenge #41 underwater
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