Magic bullet looks white balance iso#
Magic bullet looks white balance plus#

GIMP's built-in sRGB color space, using default high bit depth GIMP and 'Levels, Pick white point for all channels'.GIMP's built-in sRGB color space, using default high bit depth GIMP and 'Levels, Pick gray point for all channels'.

Magic bullet looks white balance plus#

This tutorial uses two versions of GIMP 2.9/2.10 to correct the vacation photograph's color and tonality, comparing the following four combinations of color spaces plus white balancing methods: The color-corrected photograph shown above was actually processed in a linear gamma version of the Rec.2020 color space. However, sRGB is not necessarily the best color space for white balancing camera-saved jpegs that were shot using the wrong camera white balance. The vacation photograph after white balancing, plus using Curves to slightly raise shadow tonality and somewhat restore the ambiance of tungsten lighting.īecause the vacation photo was saved in-camera as an sRGB jpeg, it seems natural to assume that the best color space for editing the image is also sRGB. This tutorial only addresses correcting the pronounced orange color cast, though the image will also be made brighter during the white balancing process. I wish I could say that this is the worst vacation photo I've ever taken, but sadly it's not even close. Plus the horizon is tilted and the photo shows wide-angle lens distortion.

Magic bullet looks white balance iso#

The photo is also blurry from camera shake and noisy from a very high ISO setting, and too dark because earlier in the day I had set the camera to underexpose by a stop or so to avoid blowing out highlights while shooting some high dynamic range scenes. Judging from the orange color cast, I suspect that the camera's Automatic White Balance was fooled by the bluer light illuminating the foreground. But this particular scene was illuminated by two light different light sources: the very yellow light from the tungsten lights over the bar, and a much bluer light source outside the frame of the camera, that illuminated the darker foreground. Normally Automatic White Balance works pretty well. The photograph in Figure 1 is has a very pronounced orange color cast, probably because I set the camera to use Automatic White Balance. The vacation photo shown below is a camera-saved sRGB jpeg taken with a point-and-shoot camera: A vacation photo, a camera-saved sRGB jpeg, exactly as it came from the camera. SRGB is not the right color space for white balancing a camera-saved sRGB jpeg that was shot using the wrong camera white balance

Summary, why white balancing camera-saved jpegs is not an easy task, and conclusion.

White balancing the vacation photo for the blue in the shadows.

White balancing a vacation photo for yellow tungsten lighting.

Introduction: sRGB is not the right color space for white balancing a camera-saved sRGB jpeg that was shot using the wrong camera white balance.