"Tim923" wrote in message
….
I was thinking about leaving the stains in there, but converting the photo to B&W to keep it all uniform.
http://www.geocities.com/tim_schmits/eschool/1.html
Hi Tim,
That works pretty well, since it’s a black and white image in the first place. Another good solution is to simply use the red channel, which is free of stain.
There is more detail in the shadows in the green and blue channels, so here is a third method that removes the red stains while keeping the shadow detail.
Duplicate the image to a new layer, and use Image>Adjust>Channel Mixer to set all three channels of that layer to 100 percent red. This gives you a clean image, with noisy shadows. Then convert to Lab mode, double click the top layer, and use the "Blend If" sliders to replace only the red stained area. This is done by moving the black triangle for the "Underlying Layer" slider to a value of 132.
The scan has an overall blue color cast, as well as a slight remaining yellow stain just above the teacher’s head. To fix these two problems, add an adjustment layer, with saturation set to -100 to make the image black and white.
If necessary, the yellow stain can be removed using the same technique as for the red stain, just with the players shifted around a bit. Use the "Blend If" b channel instead of the a channel.
If you’d like the psd file with the above adjustments as layers, send me an email. Mike at curvemeister.com. I won’t be making this one into a tutorial, since for that I need an image that is damaged in all three channels, and yours has an intact red channel.
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Mike Russell
www.curvemeister.com/forum/