Color correction is an obligatory stage of work on photographs that are transferred from the camera to the computer. Almost always, photographs need to be corrected and processed before publication, and very often photographers are faced with the need to correct the white balance, which for some reason turned out to be incorrect during shooting. You can correct the white balance after shooting in Adobe Photoshop.
One way to correct white balance is to use a Levels adjustment layer. Open the photo in Photoshop and create a new adjustment layer by choosing New Adjustment Layer from the Layers menu and then choosing the Levels option.
You will see a panel for adjusting image levels. Begin moving the slider under the main diagram, lightening or darkening the photo, depending on what effect you want to achieve. In the middle area of the settings window, edit the color balance of the photo.
Click on the middle slider and use the eyedropper to select the area of the photo that should be gray to change the color balance of the photo.
You can also correct the white balance by overlaying colors. This method allows you to achieve the most realistic looking pictures. Copy the layer of the main photo (Duplicate Layer), and then go to the copy and open the Filter menu.
Choose the Blur> Average option. Invert the resulting image by clicking the Ctrl + I keyboard shortcut. Now change the blending mode of the layers from Normal to Color, and reduce the opacity of the layer to 29-30%.
Vary the transparency level until the photo is completely free of yellowness or blue and its white balance is at a natural and correct level. Depending on the conditions in which the photo was taken and the light under which you photographed, choose between these two white balance correction methods.