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Frequently Dithering is frequently used for transparancy effects in systems that cannot properly do them. [[Sega Saturn]] for one. The Saturn port of Castlevania: Symphony of the Night]] uses dithering for dialogue boxxes, whereas the original Playstation version has proper transparant boxes.
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[[File:Cheryl_compared.png|thumb|350px|Left showing native resolution and unblended ditheirng. Right showing HD and no dithering. ]]'''Dithering ''' is a technique to increase the amount of color and shading that can be done on a system. The effect is achived achieved by using lines or dots which are then blurred by the low quality cables (composite or RF) that the system uses. Modern computers use higher quality cables, which means that the dithering ends up being sharp and unblurred.
==Use in games==
[[Genesis]] relies heavily on itdithering. The waterfalls in Sonic the Hedgehog are a classic example. A few [[SNES]] games use it as well (eg. Metal Warriors). Certain PS1 games, such as Silent Hill make heavy use of dithering. In that game it is used for shading. Many other PS1 games have a checkerboard.
Many older computer games used dithering, though unlike with console games, it was not expected for the dithering to be blended into solid colors or proper transparency due to the sharper output of PC monitors. Of particular note are games for Japanese computers such as the PC-88/98, which often featured heavy use of dithering.
==Emulation==
The result intended effects of dithering is often lost in emulation due to PCs typically using VGA or HDMI cables. The dots or lines appear as they actually are with no blurring. Options:
*Accept the unblended dithering
*Remove the dithering entirely. Enabling 32bit colors in ps1 emulators achieves this
