Why is it so difficult to create an accurate/good filter to replicate CRT displays?

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I’ve heard quite a few times that old games were made for CRT TVs, and that they look a lot better on them because of the effect. But, in the few re-releases of old games I’ve seen, the CRT filters included are simply disregarded as “bad”. With CRTs becoming more and more rare, is it really so hard, or even impossible, to recreate something faithful?

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3 Answers

Anonymous 0 Comments

CRTs have low input lag and high brightness and intense colors. They also had a lot of quirks that were exploited by art design of the time, like the images being fuzzy and interlaced, to create gradients and colors by mixing images.

They have very low resolution, poor energy efficacy and very high weight compared to a LCD, plasma or LED display.

Mostly it’s a matter of clever programmers designing the art and game to take every advantage of CRT technology available at the time. Large parts of this can be emulated, but it’s often hacky and hard to get consistent results.

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