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Old Jun 3, 2007, 3:28 PM   #1
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Hello Everyone,

I was just wondering if it was possible to correct white balance in PhotoFiltre or some other program? I took wonderful shots today, but there was a tiny bluish tinge to them. If anyone could help me fix these shots it would be great.

Thanks,

Brenden
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Old Jun 3, 2007, 3:47 PM   #2
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The Levels Dialog box in Photoshop Elements has three eyedropper tools for adjusting black, gray and white to remove colour casts. You would set default values before using them, 10 for black, 128 for gray and 240 for white. Black and white are usually easy to find in a scene compared to the gray so some people ignore the gray. For critical work you would include a black/gray/white sample card in the scene then clone stamp it out later.
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Old Jun 3, 2007, 3:57 PM   #3
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Bob Nichol wrote:
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The Levels Dialog box in Photoshop Elements has three eyedropper tools for adjusting black, gray and white to remove colour casts. You would set default values before using them, 10 for black, 128 for gray and 240 for white. Black and white are usually easy to find in a scene compared to the gray so some people ignore the gray. For critical work you would include a black/gray/white sample card in the scene then clone stamp it out later.
Thanks Bob, but what happens if I don't have that program?



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Old Jun 16, 2007, 9:30 PM   #4
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You asked if it was possible to correct white balance in PhotoFiltre or some other program so I suggested PSE as another program.
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Old Jun 16, 2007, 9:41 PM   #5
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Not familiar with photofiltre myself, but I have heard it is a pretty comprehensive program. Should be possible to adjust the levels of the various colors.

Irfanview is another free program and the latest version has enough editing capability to do what you want, especially if you use plugins such as filters unlimited (also free).

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Old Jun 17, 2007, 7:49 AM   #6
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If you want to try a "quick fix" using a simple program with color temperature controls, look at this one. I was playing around with it last night and noticed that it also let me make changes to JPEG files using the same controls that you'd normally use to tweak a raw file's color temperature, green offset, etc. It's free.

http://www.rawtherapee.com/

It may be a bit buggy (it crashed on me once).

You could also use the Gimp (also free). It's got a variety of tools that can help with color casts. The easiest method is probably selecting a white point, black point and gray point in your image using the eyedroppers in Levels.

Just load it and go to Tools>Color Tools>Levels. If you "mouse over " the eyedroppers you'll see near the bottom of the screen, it will tell you what they're for and you can watch the image change as you make each selection.

http://www.gimp.org/windows/

There is another version of it with tools that more closely resemble Photoshop known as GimpShop that you can download here (it's also free):

http://plasticbugs.com/?page_id=294

There are other methods to correct color casts, too. Here's one page discussing other ways:

http://gug.sunsite.dk/docs/Grokking-....0/node61.html

I'm not familiar with PhotoFiltre. But, a quick google search found this plugins download page, and I see a couple of different White Balance tools that may be worth looking into also:

http://plugins.photofiltre.free.fr/plugins.php?lang=en

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Old Jun 17, 2007, 8:31 AM   #7
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Here's yet another article on the subject. I remember this one because we had a discussion thread a while back started by one of our color blind members that the author of this article participated in.

http://www.nicholsonprints.com/Articles/colorblind2.htm

Here's the forum thread:

http://forums.steves-digicams.com/fo...amp;forum_id=2

Most tutorials around the net are going to assume you're using Photoshop. But, the same techniques can be used with a variety of other editors that have similar tools.

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Old Jun 17, 2007, 5:13 PM   #8
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I have been trying out Raw Therapee, but hadn't thought to try using it on jpegs. Could be quite interesting if the sharpening and noise reduction tools work also. Guess I'll give it a shot.

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