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Oopps... I screwed up. How to repair an improperly exposed white backgrou
Old 06-16-2005, 06:09 PM   #1 (permalink)
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I did an entire shoot yesterday without realizing that one of my back lights was not set to slave. DOH! I hate to "fake" things in photoshop but I *really* need to salvage a few of these shots. What i've got on one side of the frame is a nicely exposed pure white paper backdrop and other side fading into a cream or almost yellowish colored off white. I'm wondering what the easiest method to fix this while producing usable results (or as close as I can get). I have repaired something similar with painstaking use of the paint bucket but it becomes extremely painful when you have to edit the area right next to outline of the models body. I'm hoping someone here has a good method for repairing this. Other than this one major screwup the photos are pretty much ok and exposed properly.

One other bonus, I took all the pictures in Nikon RAW (D70). I don't know if that might help or not.

Thanks.
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Re: Oopps... I screwed up. How to repair an improperly exposed white backgrou
Old 06-16-2005, 07:36 PM   #2 (permalink)
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Download the trial version of Nikon Capture, it is free for 30 days. Since you shot raw you have about two stops of latitude. Use Advance Raw and lighten the image.

In Photoshop, use the magic wand to select the areas you want make white. Use the shift key to select multiple areas. Then open the levels box and move the white slider to eliminate the tones. Use the gray (gamma) slider to make the shadows appear correct.

Post an image so we can see what you are trying to fix. Good luck.
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Re: Oopps... I screwed up. How to repair an improperly exposed white backgrou
Old 06-16-2005, 08:10 PM   #3 (permalink)
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Develop the photo twice in your RAW converter. Once for the subject, and once to make the part of the background that you don't like closer to the tones you do like.
Now with both images in photoshop, drag the one where you fixed the background on top of the other photo (while holding down the shift key).
Now add a layer mask but hold down the Alt key (on PC) when you create the mask which will give you a black mask. Now only the background photo shows.
Press D to select white/black as the fore and background colors and choose a soft brush and paint in using white the area that you want corrected. If you make a mistake, use black to by painting over the mistake.
Cheers,
rfs
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