Colour Correcting > About the Colour Warper > Setting Up Your Work Environment >

# Colour Correcting All or Part of an Image

Use the options in the Work On box to apply colour corrections to all or part of an image. You can select an option from the Work On box at any time to further modify the image. Use Master to apply colour corrections to the entire image and use a selective to generate a matte and perform selective colour correction—apply the colour correction to a selected range of colour. The Work On box is available in every menu of the Colour Warper.

(a) Work On box

To colour correct all or part of a clip:

1. Select an option from the Work On box.

   Select: | To:
   --- | ---
   Master | Use the Basics menu to modify the entire image. In Master mode, you cannot output a matte.
   Sel. 1, Sel.2, or Sel. 3 | Generate a matte from the front clip selective colour correction. You can then use the Basics menu to modify the range of colour defined by the matte. In a selective mode, you can output the matte, selective, or result. See Selecting Colour Ranges for Colour Correction.