Color Cast Correction

Single Channel Mid Tone Adjustment—Color Cast Correction

When one channel is off value from the other two, perform a single channel correction.

Single Channel Correction

If two channels are near in value to each other and one is not, move the odd channel to the value to that of the two consistent channels.

The Blue Channel is out of neutral color alignment,

In the Info Palette readout, the numbers to the left of the "/" represent the input value. The numbers to the right represent the output value after the curves adjustment. In the example above, sample #5's Blue channel value is 183 and the Green and Blue channels are 188. By adjusting only the Blue channel in Curves, it can be brought up to the level of the other two.

By moving the Mid Point of the Blue Channel down in this instance, you can neutralize the mid value in the image. The Point Sample must be on a neutral value.

You will rarely get all three values in all four samples to equate. Do the best you can averaging the differences. Look for the pattern.

Normally , you won't adjust more than two channels. See FAQs for an explanation.

Two Channel Mid Tone Adjustment—Color Cast Correction

Ingo Palette readout for one of the Color Sampler points

When all three channel are different in value from each other, perform a two channel correction.

If all three channel values are different from each other, move the high and low values to the middle value.

In the example to the above, sample #1's Red channel value is 193, the Green is 183, and the Blue 174. By decreasing the Red channel to 183 and increasing the Blue to 183 with individual channels in the Curves dialog box, the three sample point values all read 183 or neutral.

I recommend setting color sampler points on 3 or 4 neutral near-mid tone areas in your image. You have the ability to set as many as ten sample points. You will rarely get all three RGB values in three sample points or more to to have equal RGB readout for each independent sample point.. Do the best you can averaging the differences. Look for the pattern.

Normally you won't be adjusting more than two channels.