Newsgroup: it.arti.cinema
Titolo: Chi sa qualcosa di onde alfa e onde beta?

Lo chiedo perche' ho trovato questo articolo su Cinema-L.
parla di Episode One, ma la cosa che mi interessava era
lultimo capoverso. Qualcuno sa se esiste effettivamente
una differenza di percezione fra pellicola proiettata e video,
indipendentemente dalla differenza della situazione (sala
vs. casa) e presumendo una qualita' equivalente della
definizione delle immagini?
speaking of being bored and net-surfing, here's something i read on
ebert's website (*COPYRIGHT INFRINGEMENT AHEAD*)
[
http://www.suntimes.com/output/answ-man/09eber.html
]
Q. George Lucas has announced he will be shooting and hopefully exhibiting
Episode II of the ``Star Wars'' saga exclusively with digital technology.
There will be no physical film stock, just memory bites in a computer.
Will this look as clear and realistic as ``old-fashioned'' movies?  Could
shooting movies on actual film go the way of the Dodo?
               Matt Wilson, Los Angeles
A. Lucas has spent 20 years and millions of dollars pioneering new levels
of digital technology, and what he has helped make possible in movie
production is truly incredible. But digital projection is another matter
altogether. Call it what you will, it's high-tech television. Bill
Mechanic, head of 20th Century Fox, told me he tried to talk Lucas out of
showing ``Phantom Menace'' in four theaters using digital projection. No
luck. Fans sampling the digital screenings will be closely quizzed on
their impressions, and I will await that feedback with interest.
Meanwhile, Lucas says he plans to make the next ``Star Wars'' film all
digital--no film--from first shot to consumer.
               That's kind of sad, because experts say the best digital
               projection is not yet a match for current film technology, and
               there is a new film system named MaxiVision, developed by
               Dean Goodhill, that projects film at 48 frames per
               second--twice the current rate--and would produce
               astonishing results for Lucas. Digital projection systems
               have been estimated to cost $70,000 per theater. MaxiVision
               can be retrofitted to existing 35-mm. projectors for afraction
               of the cost, and the projectors can show both 24 and 48
               frames-per-second films. Steven Poster, vice president of
               the American Society of Cinematographers, tells me the
               MaxiVision picture is breathtakingly superior to currentfilm
               projection, not to mention video.
               Since some perceptual psychologists argue that film and
               video are perceived differently by the mind (film createsan
               alpha state, resembling reverie, while video produces abeta
               state, resembling hypnosis), digital video projection mightin
               fact destroy the moviegoing experience as we know it. I
               hope Lucas doesn't lead the movie industry down the digital
               rabbit hole.
Alberto
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Si tratta di onde registrate durante un encefalogramma. Le alfa
corrispondono allo stato di veglia con gli occhi aperti, le beta sono una
stato di veglia "attivato", ovvero indicano uno stato in cui il soggetto ha
gli occhi aperti e la sua attenzione è impegnata in una qualche attività.
Tradotto:
-film: te ne frega il giusto e quasi dormi
-video: stai un po' più attento, ma mica tanto
:-))))