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Advise on Extreme Color Cast Correction

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  #1  
Old 03-17-2004, 01:02 PM
paulrettberg paulrettberg is offline
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Advise on Extreme Color Cast Correction

I have a series of photos I am trying to restore, but am having challenges with correcting the extreme red color cast due to aging. Tried a number of the tutorials & suggestions to no avail (relatively new member, probably more out there.) Any advise would be appreciated. Thanks in advance for your help.

Paul Rettberg
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Old 03-17-2004, 01:40 PM
okplayer okplayer is offline
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You might be able to use this as a starting point, i just real quickly adjusted the curves on the red channel, then tweaked the whole image with some adjustment layers, hue/saturation, curves, and color balance. it's not perfect but it's a start
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Old 03-17-2004, 01:55 PM
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Leah Leah is offline
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What I tried:

1. Levels adjustment layer - adjust Red, Green and Blue channels individually. Looking at the individual histograms, Red is squished up on the right, Green on the left, and Blue in the middle.

then

2. Hue/Saturation adjustment layer - boost saturation by 15
then

3. Curves adjustment layer - minor tweaks just to boost the contrast a little

Step 1 is the one that made most difference - the others were largely a case of looking at it and making minor tweaks.

I dithered about whether or not to also use a Color Balance layer to tweak towards cyan, but ended up not doing it. Still not sure if that was right or not.
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File Type: jpg barborigsmall-copy-2.jpg (95.3 KB, 84 views)

Last edited by Leah; 03-17-2004 at 02:01 PM.
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  #4  
Old 03-17-2004, 03:15 PM
Mike Mike is online now
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A method that I have found to be fast (after the first couple of times you do it) and will usually give you a pretty good idea of what you can do with the image is here http://www.eddietapp.com/e_techniques.html

Its called the 90% method, so depending on the image you may have to tweak a little after you run it. I have never heard of anybody saying that they had a perfect method of doing this.

Mike
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Old 03-17-2004, 03:43 PM
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Flora Flora is offline
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Hi Paul,

Welcome to RP!

Llike Leah, I started off by using the Levels on each Channel individually until I had minimized the Color Cast.

I added:
  • a Selective Colors Adjustment Layer to correct the colours individually.
  • a Hue/Saturation and a Color Balance Adjustment Layer to correct the overall colour of the picture.
  • new empty Layers (Blending: Color and Overlay) to emphasize color and contrast, particularly on the girl's face.

Finally, I cleaned the picture a bit and fixed the cat's eye...

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File Type: jpg F_barborigsmall.jpg (98.7 KB, 170 views)
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Old 03-17-2004, 11:38 PM
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BigAl BigAl is offline
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Very well done Flora!!
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Old 03-18-2004, 12:06 AM
sdubose99 sdubose99 is offline
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Flora, I'm always amazed at what you can do with PS. When I first looked at the original, I could not believe there were any colors there except for the color cast.

After playing around with levels, setting white and black points, colorizing layers, cloning/healing the outside edge, saturation, etc, I came up with the attached.

Selective Color looks so confusing to me. So many variables. Can you point us to some resources to learn that? For this image in particular, can you take us through your thought process to get the colors right?

Thank you,
Scott
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File Type: jpg redwithcat.jpg (53.7 KB, 76 views)
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  #8  
Old 03-18-2004, 03:40 AM
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Flora Flora is offline
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Big Al, Scott,

...thank you so much four your feedback!!!

Scott,

You did very well!!!

When correcting Colors, one of the first step I take is the Selective Colors Adjustment which, in my opinion, is one of the best and powerful Tool of Photoshop for that purpose.
It allows you to influence/change the intensity that different colours have on each individual colour of your image .... example: if only the reds and/or the blues in your picture present a strong magenta cast while everything else looks just fine, Selective Colors "selectively" lets you correct that and only that, without changing anything in the other colours....

For this picture, starting with your version, (hope you don't mind ... I think it's easier to see exactly what I changed...),I did the following: (Image 1)
  • Added a Selective Color Adjustment Layer. (In this case I had to tweak everything to get where I wanted).
  • Added a Color Balance Adjustment Layer.
  • Created a new empty Layer (blending > Color).
  • Created a new empty Layer (blending > Overlay).
  • Stamped Visible.
  • Duplicated the Stamped Layer and:
    * Ctrl+U > increased the overall Saturation;
    * run a light Gaussian Blur (radius > 0.3);
    * used the Custom Filter to lightly sharpen the picture;
    * corrected some points by creating a Layer Mask and erasing what I wanted to bring back from the underlying Layer.

You can see the changed values for Selective Colors and Color Balance in the attachments....

Hope this could help...

Attached Images
File Type: jpg Color-0000.jpg (100.0 KB, 120 views)
File Type: jpg Sel_Color-1.jpg (76.5 KB, 83 views)
File Type: jpg Sel_Color-2.jpg (77.5 KB, 55 views)
File Type: jpg Sel_Color-3.jpg (76.6 KB, 48 views)
File Type: jpg Color_Bal-1.jpg (76.6 KB, 60 views)
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  #9  
Old 03-18-2004, 01:09 PM
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gland gland is offline
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Thumbs down

Very educational. Thanks Flora..
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  #10  
Old 03-18-2004, 01:55 PM
paulrettberg paulrettberg is offline
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Thanks so much

Wow, you guys are awesome. Thanks for all the assistance.
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