Color Correct in Photoshop with One Click (Curves Gray Point)
You can correct color in seconds by telling Photoshop what should be gray. Use the Curves adjustment’s middle eyedropper to set a neutral point, or locate that point with a temporary 50% gray Difference layer for accuracy.
Step-by-step instructions
One‑click color correction with Curves
Click the Adjustments icon and choose Curves to add a Curves adjustment layer.
In Curves, select the middle Eyedropper (Set Gray Point).
Click on an area that should be neutral gray (e.g., road/concrete).
If the result is too strong, lower the Curves layer Opacity.
Find a neutral gray target with Difference
Delete/reset any Curves you just added.
Go to Layer → New Fill Layer → Solid Color and set the hex value to 808080 (50% gray). Click OK.
Change the fill layer’s blend mode to Difference; the darkest areas indicate pixels closest to neutral gray.
Create a new blank layer, press B, and lightly mark the darkest area for reference.
Delete the 50% Gray fill layer.
Apply Curves to the marked area
Click the Adjustments icon → Curves to add a new Curves layer.
Select the middle Eyedropper and click inside the marked area to neutralize the color cast.
Delete the temporary mark layer.
Optionally fine‑tune individual channels in Curves or reduce layer Opacity to taste, then save your file.
