Apply a Curves or Levels adjustment.
Keep in mind that using the eyedroppers undoes any previous adjustment you made in Levels or Curves. If you plan to use the eyedroppers, it’s best to use them first and then fine-tune your adjustments with the Levels sliders or Curves points.
Apply a Curves or Levels adjustment.
In the Properties panel, do any of the following:
In the Adobe Color Picker, determine the values you want for the darkest and lightest tones in the image:
Do one of the following to adjust the tonal areas to the black or white points you specified in Step 2:
You can use the eyedroppers in the Levels or Curves adjustment to correct a color cast such as an unwanted tint from an excess of color (red, green, blue, or cyan, magenta, yellow). It’s easier to color-balance an image by first identifying an area that you want to be neutral and then removing the color cast from that area. Depending on the image, you can use one or all three of the eyedroppers. The Set Gray Point eyedropper works best on images that don’t require large adjustments and have easily identified neutrals.
Keep in mind that using the eyedroppers undoes any previous adjustment you made in Levels or Curves. If you plan to use the eyedroppers, it’s best to use them first and then fine-tune your adjustments with the Levels sliders or Curves points.
The eyedropper tool that sets the gray point is used primarily for color correction and is unavailable when you work with grayscale images.
Before applying an adjustment, identify an area in the image that you want to be neutral gray. For example, a paved road.
Use a color sampler to mark a neutral area so that you can click it with an eyedropper later.
Click the Levels or Curves icon in the Adjustments panel.
In the Properties panel, double-click the Set Gray Point tool .
In the Adobe Color Picker, verify that the currently selected color has identical R, G, and B values for a neutral gray (for example, 128,128,128). If necessary, type the identical values for R, G, and B. Photoshop asks whether you want to save the new target color as a default.
With the Set Gray Point eyedropper tool, click the neutral area that you identified in Step 1. This should reset midtones and remove the color cast from the image.
(Optional) Make final Levels or Curves adjustments in the Properties panel.
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