6. Appendices

Gamma Correction

The following types of gamma correction are possible. However, different models of output devices have different characteristics. Select a suitable gamma curve for the original that is to be scanned and the output device.

Normal

Emphasizes the contrast slightly, resulting in a somewhat sharp scanned image.

Sharp

Emphasizes the contrast, resulting in a sharp scanned image.

Soft

Decreases the contrast, resulting in a soft scanned image.

Linear

Outputs the image as scanned.

User-defined

Downloads a user-defined gamma curve for gamma correction.

Normal

Sharp

54 Soft

Linear

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Image 68
Ricoh IS450 operating instructions Gamma Correction