outofsync skrev:
Hej alle.
Jeg har lige læst dette:
http://www.hifi4all.dk/content/templates/nyheder.asp?article id=878&zoneid=1
Hvordan kan man sige: "Den tårnhøje kontrast på 3000:1" ?? Jeg tror der må være nogen der aldrig har set et normalt kontrast-forhold. Egentligt underligt, de fleste burde have levet med et normalt TV i mange år.
Som sammenligning kan jeg fortælle at der selv mellem 25000:1 og 30000+:1 er stor forskel i billedet.
Hvad er det højeste kontrast-forhold DU har set? Og hvad synes du om det?
Nicholas, keder sig lidt på arbejdet. |
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30000:1 på en Barco 1209. Desværre levere min egen BG808 kun sølle 20000:1.
MEN - måske er det bedre at vi begyndte at snakke om en projektors sortniveau - det er jo det vi er intereseret i.
Widescreen Review har i de sidste par måneder kørt en artikkel serie der hedder "Display shootout".
Her sammenlignes nogle teknogier evner inden for sortniveau, lys, kontrast m.m.
"But the real question is how do video
displays and projectors compare with a
movie theatre? Kodak motion picture film
has maximum densities of roughly 4.0 (for
the standard Vision Color Print Film 2383)
and 5.0 (for the high-end Vision Premier
Color Print Film 2393). This corresponds to
dynamic range values of 10,000 and
100,000, although production movie prints
will not reach these maximum values. With
typical exposure and development movie
prints can be expected to deliver roughly a
factor of 10 less than the maximum. A specialist
with Eastman Kodak provided
Minority Reportas an example of a motion
picture that delivers the darkest state-of-theart
blacks, with actual print densities reaching
4.0, equivalent to a dynamic range of
10,000. As we’ll see below, CRTs typically
fall in the range of 10,000 to 30,000 for
dynamic range, so they can actually perform
significantly better than any motion
picture film (if they are carefully set up). The
best that flat panels can do now is about
3,000, so their performance is better than
standard grade motion picture film but well
below what the best films deliver. The higher
the dynamic range the darker the black
level for a given peak brightness. Motion
picture theatres typically operate between
41 to 75 cd/m2 (SMPTE 196M), which is
comparable to front projectors but much
lower than the direct-view and rear-projection
displays considered here (see below),
so different eye adaptation levels apply." - Widescreen Review Volume 13, Number 9, Issue 88, September 2004
Interesant at se, at biografer ligger mellem 1000:1 og 10000:1.
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In the Land of Hometheater, The Three Eyed Monster is King......