Advanced Scanning
Note:
Before using the densitometer, make sure you are in pixel view.
Setting the Densitometer Measuring Point
In addition to having the desitometer display values based on the mouse position, you can also fix the measurement point to a specific location on an image. This is useful when you want to set a value for a specific area on an image, such as adjusting the highlights in an image.
To set the densitometer measuring point:
1.Move the mouse pointer to the point on the image where you want to measure image density.
2.Press the Shift key while clicking the image.
A red cross 
appears at the reading point on the image. This point remains the stable reading point until you again press the Shift key while clicking the image.
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