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Posted by GeekBoy on 04/17/07 21:34
"EHSTC" <pilkington13@netzero.net> wrote in message
news:1176843245.443261.165350@p77g2000hsh.googlegroups.com...
> Hey all,
>
> My high school TV studio has a green screen, and we have got it to
> work, but I get loads of "sparkles" on my subject. Ive looked into
> this online, and found that it is cuz of spill from over lighting at
> that the screen luminisity or something should be at 40-50
> IRE........WHAT IS IRE, and how do i measure that?
>
Institute of Radio Engineers; IREs are units of measurement dividing the
area from the bottom of sync to peak white level into 140 equal units. 140
IRE = 1VP-P
Using a vector or wave scope which is a lot more money than maybe the school
is willing to spend. Unless they arelready have a scope.
Some editing software has these on them to measure.
> thanks
> EHSTC
>
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