Which leads me to another question??? Why
is CBS (and dragging Sony & others) so adamant about making
sure 1080i is included in the upcoming h.265 spec? Is there more
than religion at stake here?
(the other one...)
Manfredi, Albert E [mailto:albert.e.manfredi@xxxxxxxxxx]
Sent: Sunday, October 21, 2012 7:39 PM
Subject: [opendtv] Re: 4k @ 60 fps encoded
into 15 Mbps using HEVC
Mark Schubin wrote:
> As to cognitive dissonance, watching
a movie (or opera) in a cinema
> requires a financial outlay for a
ticket, travel to the cinema,
> blocking out time, and possibly such
other costs/requirements as
> getting a baby sitter,
parking/transit fees, dinner, etc. If, after
> all of that, the viewer doesn't like
the movie, then all of the
> expenditures of money and time were
foolish. But the viewer doesn't
> want to be a fool, so there is a
predisposition to like the event.
That cracked me up.
I completely agree with this and your
other points. I suppose that if the average joe went to the
movies every day, some other activity would become the "event,"
and the movie-going would be more like watching TV.
The theaters we usually go to suddenly all
switched over to Sony Digital Cinema 4K, which is just about
exactly twice as much horizontal and vertical as 1080p HDTV:
4096 X 2160. The ads and other features that come before the
show, and before the actual movie previews, are instead 16:9
We like to sit about half-way up the
seats, in the stadium style theaters. So the screen looks quite
large, compared with how we watch the 42" HDTV at home.
Anyway, it's easy enough to "count the
pixels" when the SD pre-show stuff is showing, but the Sony 4K,
even on the 2:35:1 blockbuster format, is beyond reproach, as
far as I'm concerned. I'm wondering whether any more than that
even makes sense in a home format, even if 100" screens became
the new normal.
A 100" screen is about 50" high and 87"
wide. At say 10' viewing distance (too close for comfort, IMO),
that's a distance of 2.4 picture-heights. So that calculates out
to an angular separation of the pixels of 0.66 arcminutes at the
viewer's vantage point, which ought to be well within what the
majority of people can discern (the literature indicates
anything from 1 to 2 arcmin, many claim 1.5). Even acknowledging
that any such numbers are just first order approximations of
actual visual acuity.
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