That will get your tint and color temperature pretty darn close to right. If, when shooting, you want to get close to a "correct" color temperature, shoot an 18% gray card or an Expo Disc. That implies that you don't have a known neutral or calibrated color set. Match Color in Photoshop was (as I understand it) intended to do an after-the-fact match of whatever colors seemed similar. It's worth mentioning that if you have the luxury of shooting targets, you can alleviate a lot of the problems right from the get-go. There may be reasons that I'm not aware of, but at present, I use Capture One, Lightroom, Aperture, and Photoshop, each of which can help me achieve natural color balancing. I've only unpacked it a couple of times, but since I've had a Photoshop license forever, it doesn't make sense for me to use Gimp. Update: being curious, how far this method can go, I wrote a small Python script, which takes colors from the first image, calculates best curves by averaging target values and adjusts the second image. Target image was:Ĭonsider also taking more color samples and more shades of the same color into considerations (in this example: the wall, dish, ceramics, shadows in the leaves). It is not exactly the same as the target image, but much closer than initially. Look at what you are doing, also don't hesitate to move curve points a little and look at preview (I'd move red curve down a little, in fact, try it yourself).Ĭorrected image (blind two-point curve adjustments in Red and Blue channels): The next step, I select Blue channel, and let its curve pass through point (180,110) (Blue=180 is reduced to Blue=110) and through the second correction point (190,140):įinally, the green curve can pass through (90,110) and (155, 150), but I don't like the result, and didn't apply the green curve. So there is too much blue, almost correct amount of green, and way to little red.Īs a simple correction, I open the curves tool, select Red, channel, and let the curve pass through points (20,110) and (55,140) (because Red=20 should become R=110, and Red=55 should become Red=140).
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