re: 50Hz flicker.

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Michael Jones (mtj++at++isdn-celeste.corp.sgi.com)
Sat, 16 Nov 1996 17:49:02 -0800


Steve Baker writes:

:There is nothing inherently bad about 50Hz - 50 Million people
:from my mother country (UK) watch 50Hz Television every day without
:complaint. It depends in part (as you point out) on the decay rate
:of the phosphor - and in part on conditioning. I have heard Americans
:complaining that British TV seems flickery to them. Another factor is
:the field-of-view. You eye is MUCH more sensitive to flicker at
:the edges of the retina than in the center - so wide field-of-view
:displays appear to flicker more than narrow ones.

There's also the fact that the TV pictures in the UK (and everywhere
else) have motion-blur artifacts that help with image fusion. This is
true with the motion picture industry as well.

michael

Be seeing you, Phone:415.933.1455 Fax:415.965.2658 MS:8U-590
Michael T. Jones Silicon Graphics, SSG--Advanced Graphics Division
mtj++at++sgi.com 2011 N. Shoreline Blvd., Mtn. View, CA 94039-7311
120 Mario 64 Stars OpenGL/ImageVision/OpenInventor/Performer/Cosmo3D
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