nxtr17.pdf

Using Control Points – correcting colour cast

Request

I would like to correct the color cast in a JPEG or TIFF image for more natural colors.

Response

If the image contains a grey or white area, a Neutral Control Point can be used to easily

correct the image.

*Control Points can also be used to correct RAW images, but here, we explain the process for

correcting JPEG images.

Before

The image exhibits a blue color

cast.

After

The color cast is corrected for natural

coloring.

Procedures

STEP 1: Open an image

This image exhibits a blue color cast. We will correct this image to produce natural colors.

STEP 2: Apply Neutral Control Point enhancement

Click the Neutral Control Point tool.

Click on the portion of the image that should have been originally white or grey.

A Neutral Control Point will appear over the portion of the image that was clicked.

A B/W/N Control Point step is added to the Edit List. Neutral Control Point is displayed

under the B/W/N Control Point step.

At the same time, the Neutral Control Point dialog is displayed.

When the Neutral Control Point is moved, image colors are modified, so drag the

Neutral Control Point to the position that achieves the most natural colors.

Drag the Neutral Control Point to reposition it.