Comparison of Algorithms
The Bradford matrix is used here for correcting the gray world and Sensor Correlation illuminant estimates.
Simplest Color Balance is probably the best one.
This is a difficult image but again, Simplest Color Balance does well.
ISET was used to generate an artifical color cast on the flower. Simplest Color Balance and Robut Auto White-Balance both do good jobs here. There's probably only brightness difference between them. I would give the nod to RAWB here because it's not throwing away details through saturation.
RAWB is probably the winner. Simplest CB makes it too vibrant. When I took this photo I remember that there was a bit of a haze.
RAWB probably comes the closes to the manual correction shown here. It's still pretty far off though.
They're all pretty terrible. Gray world fails quite miserably here. It drastically overcompensates for the orange tint. Simplest CB takes this exceedingly vibrant image and makes it even more so.
Simplest CB takes this photo of the breaking dawn and makes it look like high noon, awful. Gray world is probably best here
Simplest CB is the only one that preserves the grays of the clouds, but it clips out all the shadow details in the trees. Keep the original.