Canon PIXMA MG2440 - Manual (Page 169)

Note
The correction level can be changed by moving the slider displayed below Face
Sharpener.
When the cursor is moved over the image, the shape of the cursor changes to
(Cross).
6. Drag to specify the area you want to correct, then click OK that appears
over the image.
The face area in and around the specified area is sharpened and the (Correction/
Enhancement) mark appears on the upper left of the image.
Note
You can also drag to rotate the specified area.
Click
(Display Comparison Screen) to display the images before and after
the correction side by side in a separate window so that you can compare and
check the result.
Click Undo to undo the last operation.
7. Click Save Selected Image or Save All Corrected Images.
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