In this quick tutorial, I'll show you a secretway to fix your white balance in Photoshop.
Usually people just create a curves adjustmentlayer, and then use the pipettes to select the black and white points.
In theory, Photoshopshould then automatically configure the curves adjustment to fix your white balance.
As you can see though, in practice, this oftendoesn't work out very well.
These extreme sampling points have poor color accuracy andonly allow for very linear adjustments.
A much better alternative would be to carryout our sampling in the mid tones.
This would allow us to generate more accurate curvedadjustments and take advantage of the better color accuracy.
We call this the grey point.
And here's mysecret to finding it – even if you didn't include a fifty percent grey card in yourimage! First create a new layer and fill it withgrey by going to Edit.
Then set the blending mode for this layer to Difference.
Next create a Threshold adjustment layer atthe top of the layer stack.
And drag the slider almost all of the way to the left.
You'llsee just a few areas will be highlighted in black now.
These are the areas of your imageclosest to fifty percent grey.
Now select the Color Sampler tool and clickthe center of one of those blackened areas, to save a sampler point.
It's best to choosea point that you remember was grey, and was also directly lit by your light source.
Once you're done hide the grey and thresholdlayers and select your curves adjustment layer.
This time, instead of using the black andwhite point pipettes, we're going to use the grey point pipette instead.
That's the onein the middle.
Use this pipette on the exact sampler point we saved earlier.
You'll see that, in this case, our curvesadjustment has worked amazingly well.
This is because it has automatically created somereally accurate curved adjustments to fix our white balance.
Finally, let's not forget to remove our colorsampler point.
To do this, go back to the Color Sampler tool and click Clear on thetop bar.
That's it for this tutorial.
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