Specifying how images are displayed on screen

The appearance of images on screen will never exactly match the appearance of images in a printed overlay. By specifying the imaging preferences, you can change the way images are displayed on screen in order to achieve a higher degree of similarity to printed output. The settings will affect all images in the overlay.

Note:

The display settings will not affect the printed output.

To specify how images are displayed on screen

1	Select View > Preferences. The Preferences dialog box opens.

2	Select the Imaging tab.

3	Specify the display settings.

4

Click OK.

 

Display settings
Intensity	An intensity value between -100 and +100, where -100 corresponds to black and +100 corresponds to white.
Contrast	A contrast ratio between -100 and +100 (in percent). The contrast ratio is the ratio between the brightest white and the darkest black in an image.
Gamma	A gamma correction factor between 0.01 and 4.99. Gamma is a numerical parameter that describes the non-linear relationship between pixel value and intensity. The non-linearity of the screen must be compensated in order to achieve a correct reproduction of the intensity in an image.
Dithering	Dithering is a technique that is used to mix pixels of available colors to simulate colors that are currently not available. Ordered – This option is faster than Error diffusion, but the result is often not as good. It may produce a distinctive pattern of darker or lighter areas in the image. Error diffusion – This option produces a less structured dither than the Ordered option. It eliminates the distinctive patterning using the surrounding pixels when mixing the pixel color. However, diffusion dithering may cause visual inconsistencies when only a part of the screen is redrawn.