Canon FS 3.6 Setting the Gamma Value Correctly, Display Gamma Value vs. CanoCraft FS Gamma Value

Step 3 • Adjusting Images

Setting the Gamma Value Correctly

Different display models tend to reproduce color tones in characteristic ways that are expressed with a gamma value. Most displays fall within a range from 1.4 to 2.2, which reproduces tones that are slightly darker than the original. To faithfully reproduce the original tones, it is necessary to correct the display’s gamma value with CanoCraft FS.

The program normally adjusts the display’s gamma value to 1.8, but if your display does not operate at this value, you will need to adjust it.

Display Gamma Value vs. CanoCraft FS Gamma Value

CanoCraft FS and your display each have their own distinct gamma value, which is defined as the coefficient each program or device uses to match its output data to its input data. For CanoCraft FS, the input data is the image data it receives from the scanner and the output data is the data it sends to the display.

For the display, the input data is the image data it receives from CanoCraft FS and its output is the image that appears on its screen. CanoCraft FS automatically calculates its gamma value as the inverse of the display gamma value that you specify. If, for example, the display gamma value is set to 1.8, the scanner gamma value is automatically set to 0.56.

• Please read the documents shipped with your display or contact the manufacturer’s customer service department to obtain the correct gamma value for your particular display model.

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