[opendtv] Re: Practical realities on screen aspect ratios
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 13 Jul 2017 00:42:36 +0000
Craig Birkmaier wrote:
We're not talking about playing video games on screens 15-30 inches
from the viewer Bert. We are talking about TV and movies screens.
Wow, Craig, you really don't get this stuff. The problem is exactly the same.
The issue is distance in screen heights, so the actual distance in feet is
irrelevant. And the problem happens when something filmed assuming a certain
maximum FOV is viewed in a venue with much greater FOV. It's hardly surprising
that motion sickness could result, and if you would ever go into a movie
theater, you could see for yourself. Sit in the front row, in a movie with fast
motion, in a theater where seats are arranged up close to the screen.
Your constant arguing makes you sound ever more clueless. Do you really think
that motion in a game and motion in an action movie is fundamentally different?
Explain why your think it's different, Craig.
1. The ratio of FOV, horizontal to vertical, is *not* the same as
the aspect ratio of a screen, as Craig assumes. The larger the
FOV, the more the difference.
But the last sentence is incorrect and meaningless.
Only because you are completely clueless and worse, stubborn. If you keep the
FOV ratio constant, say 2:1, to achieve that vertical and horizontal FOV from a
screen, the screen has to become wider and wider, as FOV values go up. That's
what the tangent function does. I showed you the math and the results.
Again, I can't even understand what you don't get. Go to the extreme, a full
180 degree horizontal FOV. How wide does the (flat) screen have to be, to
achieve that? ANSWER, Craig.
IMAX covers the entire human FOV.
You must be joking. Or you are wearing blinders. IMAX does not even come close.
In part, since you have not mastered the concepts **at all**, you are being
fooled by the darkened theater. But if you can't see beyond the edges of an
IMAX screen, without turning your head, you have serious problems.
Clip the rest. It's too painful.
Bert
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