Originally Posted by Cavi Mike
The image stays on the screen for a moment with CRT's - it blends the previous frame with the next.
Not quite accurate.
See High Speed Video of CRT versus LCD
. The CRT image does faintly blend into the next, but that isn't why CRT's have good motion clarity. The motion clarity of a CRT is because the image fades away so quickly. Also, shorter-persistence CRT's (less blending into next frame) have less motion blur than longer-persistence CRT's (blends more into next frame)
But, yes, CRT's does look a lot better for at low resolutions than LCD's because of CRT's natural antialiasing and lack of native resolution / lack of scaling degradation.
It wasn't necessary for higher framerates back in those days.
That part is correct.The science show that motion blur is dictated by the LENGTH of the visible frame.
Reducing motion blur is done by shortening the refreshes.
There are two main ways to shorten the refreshes:
1. Black gaps between refreshes (briefer flickers, like CRT flicker, plasma flicker, LightBoost flicker)
adding more Hz (more refreshes)
LightBoost still requires high framerates, only because LightBoost is like owning a CRT that only strobes at 100-120Hz. That was a vendor decision, because it was originally designed for 3D Vision at 50/50Hz or 60/60Hz per eye, but also had an intentional secondary motion blur reduction benefit, too. (See LightBoost FAQ
). LightBoost would benefit 60Hz if the hardware was able to strobe at only 60Hz. (You can also use software-based black frame insertion in conjunction with LightBoost, to block out every other strobe -- some compiles of MAME emulator can do this -- www.blurbusters.com/mame
for the "60Hz LightBoost" effect.)Edited by mdrejhon - 8/25/13 at 3:51pm