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Quick Fix for Severe Colorcast

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  #1  
Old 07-27-2003, 04:31 AM
Doug Nelson's Avatar
Doug Nelson Doug Nelson is offline
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Post Quick Fix for Severe Colorcast

This a quick and easy fix for severe colorshifts that effect the entire image evenly. Photoshop 7 [details]
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Old 07-28-2003, 02:39 AM
sdubose99 sdubose99 is offline
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Danny, thanks for this. It's simple and logical...

Scott
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Old 05-08-2006, 09:43 PM
christo christo is offline
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Newbie color cast question

Can you explain "The first thing we do is to sample an area using the eyedropper set to 5x5."
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Old 05-08-2006, 10:26 PM
sdubose99 sdubose99 is offline
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In Photoshop, click on the eyedropper tool. Then in the eyedropper toolbar above your canvas, a dropdown appears saying Point Sample. Change it to 5x5 Average, which essentially makes a broader sample area.

Scott
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Old 05-09-2006, 08:33 AM
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Another way to do this is to duplicate the original, Run Blur->Average on the dupe. This will essentially give you the average color of the cast. Invert and set that layer blend mode to overlay.

This method gives a better assessment of the color cast by averaging the entire image rather than just a 5x5 pixel area.
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Old 05-09-2006, 09:48 AM
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Please please can we have more of this sort of tutorial, i really struggle with colour cast's etc etc, Tutorials that i find end up confusing me more absolutely love this one, because i can understand it and follow it too

Thank you

Palms
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Old 05-09-2006, 10:47 AM
Syd Syd is offline
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Here's another approach albeit for a mild color cast. [URL=http://www.lunacore.com/photoshop/tutorials/tut005.htm] An approach I often use is one I picked up at myjanee.com (but for some reason I can't seem to look up her tutorial page tonight). It is also very simple. Use the Threshold command to determine the whitest spot on the image. Alternately you could just decide what you wanted to turn white eg. a white shirt, a cloud, etc. Use a color sampler marker to mark the whitest spot then cancel threshold. Use your eyedropper tool to sample the color at that point, create a new layer, fill the layer with the color, invert it and set to Color Dodge. This will turn everything the sampled color to white.
Sincerely Syd
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Old 05-09-2006, 12:14 PM
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Stroker Stroker is offline
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To the colour layer, clip a H/S adjustment layer and tweak with the Hue and Sat sliders. One of my favorite little things.

Over-all, my personal favorite variation is the Lab one.
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Old 05-09-2006, 04:40 PM
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Peter S Peter S is offline
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You guy probably already know this, but not forget you can also add a mask to hide parts of the pictures that don't have a cast.
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Old 05-10-2006, 05:24 AM
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philbach philbach is offline
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Doug vrs Swampy

Well I Downloaded Restoration Challange #85 which has a severe color cast and used Doug's Method on the left and Swampy's Method on the right. No other corrections were made to the file. Using Doug's technique, I sampled the baby's right sleeve which I presumed was white.
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