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StormChaser
Posted: Sun Feb 10, 2008 3:51 pm
Guest
On Feb 10, 9:10 am, klu...@panix.com (Scott Dorsey) wrote:
Quote:
StormChaser <ringpr...@surfglobal.net> wrote:

That may be true but the term 16:9 is not for us but rather the
retailers
who needed a phrase that the proletariat could understand and retain.
Not an easy task.

So call it 1:1.78.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Forget it.
Too many numbers.
Bhairitu
Posted: Sun Feb 10, 2008 3:55 pm
Guest
StormChaser wrote:
Quote:
On Feb 9, 10:10 am, klu...@panix.com (Scott Dorsey) wrote:
J. Theakston <tomservoro...@yahoo.com> wrote:
On Feb 7, 11:31 pm, StormChaser <ringpr...@surfglobal.net> wrote:
Besides, you grew up with the Academy Ratio.
You're just going to ditch it for the 16:9
blonde bimbo down the street?
What? Are you being ironic?
Almost every theatrical film in the last 50 years has been wide, so
what does it matter? You and I who watch films made from before 1980
are the minority, so what say do we have?
Widescreen films are NOT 16:9, or even close. Most are wider than that,
and they have to either be cropped or letterboxed to fit properly on the
newfangled 16:9 video format.

16:9 is somewhere in-between modern "flat" and "scope" film formats and
it is not right for either.
--Scott
--
"Cuesta un Nagra. Crest suisse, et tres, tres precis."

That may be true but the term 16:9 is not for us but rather the
retailers
who needed a phrase that the proletariat could understand and retain.
Not an easy task.
16:9 was decided on because you can divide 4:3 into it. At the time it

had some technological advantages (this before anyone envisioned LCD
panels that could come in any shape). You don't loose a lot going from
1:85:1 to 1:77:1 but you sure do cropping 2:35:1 to fill up the screen
on an HDTV because Joe Six Pack wants his screen filled. It looks
downright claustrophobic.

I haven't looked into the converter boxes (I don't need one) but I bet
they zoom and cinematographers will be told to continue the practice of
centering the action for 4:3 like they do now on network widescreen
shows instead of using the full 16:9 canvas. Again catering to the
lowest common denominator (whose pockets are easier to pick I guess).
peterh5322
Posted: Sun Feb 10, 2008 5:34 pm
Guest
On 2008-02-10 11:55:31 -0800, Bhairitu <noozguru@sbcglobal.net> said:

Quote:
16:9 was decided on because you can divide 4:3 into it. At the time it
had some technological advantages (this before anyone envisioned LCD
panels that could come in any shape).

It has more to do with channel bandwidth than the apparent fact that 4
goes into 16 an integral number of times and 3 goes into 9 and integral
number of times.
--
CinemaScope® - The Modern Miracle You See Without Special Glasses!
--
Peter
Scott Dorsey
Posted: Sun Feb 10, 2008 9:10 pm
Guest
J. Theakston <tomservorobot@yahoo.com> wrote:
Quote:

16:9 is somewhere in-between modern "flat" and "scope" film formats and
it is not right for either.

Wrong. It's a ratio that's actually less than both.

Arrgh. I mean to say modern "flat" and "academy." Brain jammed.

Scope is a whole other set of cropping...
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Bhairitu
Posted: Sun Feb 10, 2008 11:52 pm
Guest
peterh5322 wrote:
Quote:
On 2008-02-10 11:55:31 -0800, Bhairitu <noozguru@sbcglobal.net> said:

16:9 was decided on because you can divide 4:3 into it. At the time
it had some technological advantages (this before anyone envisioned
LCD panels that could come in any shape).

It has more to do with channel bandwidth than the apparent fact that 4
goes into 16 an integral number of times and 3 goes into 9 and integral
number of times.
Please explain what it has to do with channel bandwidth?
Fredrik Sandstrom
Posted: Mon Feb 11, 2008 1:08 am
Guest
Bhairitu <noozguru@sbcglobal.net> writes:
Quote:
You don't loose a lot going from 1:85:1 to 1:77:1 but you sure do
cropping 2:35:1 to fill up the screen on an HDTV because Joe Six
Pack wants his screen filled. It looks downright claustrophobic.

Why not stretch it vertically to fill the screen? Joe Six Pack loves
the distorted picture of 4:3 material stretched horizontally to fill
his 16:9 screen, so shouldn't that work the other way too?

--
Fredrik Sandström
fs@iki.fi
peterh5322
Posted: Mon Feb 11, 2008 3:33 am
Guest
On 2008-02-10 19:52:16 -0800, Bhairitu <noozguru@sbcglobal.net> said:

Quote:
Please explain what it has to do with channel bandwidth?

A North American television channel has 6 MHz of bandwidth.

Video is AM modulated using "vestigial sideband" techniques, so that
the sidebands are not symmetrical.

Audio is FM modulated.

The video and audio carriers are separated by 4.5 MHz.

This leaves a precise, and somewhat limited amount of bandwidth left
for the video.

In an analog world, the number of lines, hence the vertical resolution,
is limited by the available video bandwidth.

For our (analog) NTSC system, 525 lines is the maximum.

Similar restrictions apply to digital systems.
--
CinemaScope® - The Modern Miracle You See Without Special Glasses!
--
Peter
Scott Norwood
Posted: Mon Feb 11, 2008 4:34 am
Guest
In article <m2fxw0f5c6.fsf@cons.adsl.abo.fi>,
Fredrik Sandstrom <fs@iki.fi> wrote:
Quote:
Bhairitu <noozguru@sbcglobal.net> writes:
You don't loose a lot going from 1:85:1 to 1:77:1 but you sure do
cropping 2:35:1 to fill up the screen on an HDTV because Joe Six
Pack wants his screen filled. It looks downright claustrophobic.

Why not stretch it vertically to fill the screen? Joe Six Pack loves
the distorted picture of 4:3 material stretched horizontally to fill
his 16:9 screen, so shouldn't that work the other way too?

Oh, God, no! Please! I'd rather watch a pan-and-scan VHS tape of
a scope film than an Academy film stretched out to 16x9. What is
really mind-blowing is that the "stretch" setting is actually the
_default_ configuration for many widescreen TV sets and requires
some (minimal) amount of effort to disable.

Whoever decided that it was a good idea to have a default setting
that intentionally distorts the image deserves to be shot.

--
Scott Norwood: snorwood@nyx.net, snorwood@redballoon.net
Cool Home Page: http://www.redballoon.net/
Lame Quote: Penguins? In Snack Canyon?
Guest
Posted: Mon Feb 11, 2008 9:56 am
Quote:
Which is why we have curtains and masking.
--scott
--
"C'est un Nagra.  C'est suisse, et tres, tres precis."

Masking (usually) but in most theaters curtains, alas, are either not
present or not used even if present

And, from some of the comments in the group, even when present may not
be used correctly...the old ways are dying...
Scott Dorsey
Posted: Mon Feb 11, 2008 12:02 pm
Guest
In article <fopmde$t0i$1@reader2.panix.com>,
Scott Norwood <snorwood@redballoon.net> wrote:
Quote:

In article <m2fxw0f5c6.fsf@cons.adsl.abo.fi>,
Fredrik Sandstrom <fs@iki.fi> wrote:
Bhairitu <noozguru@sbcglobal.net> writes:
You don't loose a lot going from 1:85:1 to 1:77:1 but you sure do
cropping 2:35:1 to fill up the screen on an HDTV because Joe Six
Pack wants his screen filled. It looks downright claustrophobic.

Why not stretch it vertically to fill the screen? Joe Six Pack loves
the distorted picture of 4:3 material stretched horizontally to fill
his 16:9 screen, so shouldn't that work the other way too?

Oh, God, no! Please! I'd rather watch a pan-and-scan VHS tape of
a scope film than an Academy film stretched out to 16x9. What is
really mind-blowing is that the "stretch" setting is actually the
_default_ configuration for many widescreen TV sets and requires
some (minimal) amount of effort to disable.

What you need to do is watch it from WAY on the side.... at a very
acute angle from the screen.

Quote:
What you need to do is watch it from WAY on the side.... at a very
Whoever decided that it was a good idea to have a default setting
that intentionally distorts the image deserves to be shot.

Well, it's what people want. And if you go into a public place and
reset the TV sets for letterboxing, everyone will yell at you that
they want the wide screen. I say this from personal experience.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Bhairitu
Posted: Mon Feb 11, 2008 2:36 pm
Guest
Scott Norwood wrote:
Quote:
In article <m2fxw0f5c6.fsf@cons.adsl.abo.fi>,
Fredrik Sandstrom <fs@iki.fi> wrote:
Bhairitu <noozguru@sbcglobal.net> writes:
You don't loose a lot going from 1:85:1 to 1:77:1 but you sure do
cropping 2:35:1 to fill up the screen on an HDTV because Joe Six
Pack wants his screen filled. It looks downright claustrophobic.
Why not stretch it vertically to fill the screen? Joe Six Pack loves
the distorted picture of 4:3 material stretched horizontally to fill
his 16:9 screen, so shouldn't that work the other way too?

Oh, God, no! Please! I'd rather watch a pan-and-scan VHS tape of
a scope film than an Academy film stretched out to 16x9. What is
really mind-blowing is that the "stretch" setting is actually the
_default_ configuration for many widescreen TV sets and requires
some (minimal) amount of effort to disable.

Whoever decided that it was a good idea to have a default setting
that intentionally distorts the image deserves to be shot.

My 8 year old Pioneer HD set has 5 settings for analog signals: FULL

which fills the screen and on 4:3 the stretch we all hate, 4:3 with grey
bars on the side, Natural Wide which stretches but also cuts some off
the top and bottom so it doesn't look too bad, Cinema Wide which
stretches and cuts more off the top and bottom and finally ZOOM which
allows a letterboxed presentation to fit the screen by scaling up the
16:9 area. That setting is also adjustable vertically to account for
differences in where the letterbox top begins.
Bhairitu
Posted: Mon Feb 11, 2008 2:44 pm
Guest
peterh5322 wrote:
Quote:
On 2008-02-10 19:52:16 -0800, Bhairitu <noozguru@sbcglobal.net> said:

Please explain what it has to do with channel bandwidth?

A North American television channel has 6 MHz of bandwidth.

Video is AM modulated using "vestigial sideband" techniques, so that the
sidebands are not symmetrical.

Audio is FM modulated.

The video and audio carriers are separated by 4.5 MHz.

This leaves a precise, and somewhat limited amount of bandwidth left for
the video.

In an analog world, the number of lines, hence the vertical resolution,
is limited by the available video bandwidth.

For our (analog) NTSC system, 525 lines is the maximum.

Similar restrictions apply to digital systems.
No because digital is broadcasting MPEG-2 transport streams. It 1s and

0s! Most stations broadcast HD well within the limits of 6 MHz of
bandwidth some using part of it for a second 480 channel. Original HD
was going to require about 12-14 Mhz of bandwidth and then in the early
1990s MIT I believe proposed using MPEG-2 so that HD could be done over
6 MHz slots.

Bandwidth had nothing to do with 16:9 which was developed for technical
reasons mainly being able to use non-square pixels for things like
anamorphic DVDs, etc.
http://en.wikipedia.org/wiki/Aspect_ratio_(image)
StormChaser
Posted: Mon Feb 11, 2008 5:12 pm
Guest
On Feb 11, 12:08 am, Fredrik Sandstrom <f...@iki.fi> wrote:
Quote:
Bhairitu <noozg...@sbcglobal.net> writes:
You don't loose a lot going from 1:85:1 to 1:77:1 but you sure do
cropping 2:35:1 to fill up the screen on an HDTV because Joe Six
Pack wants his screen filled. It looks downright claustrophobic.

Why not stretch it vertically to fill the screen? Joe Six Pack loves
the distorted picture of 4:3 material stretched horizontally to fill
his 16:9 screen, so shouldn't that work the other way too?

--
Fredrik Sandström
f...@iki.fi

Reminds me of the dreadful displays big box retailers
like BB and CC have on their LCD and Plasma screens.
They expect a consumer to part with several grand after
watching a display that is connected via the RF input.
Peter
Posted: Mon Feb 11, 2008 6:35 pm
Guest
On 2008-02-11 10:44:16 -0800, Bhairitu <noozguru@sbcglobal.net> said:

Quote:
Similar restrictions apply to digital systems.

No because digital is broadcasting MPEG-2 transport streams.

A channel is a channel is a channel, to paraphrase Gertrude Stein, my
real-life Godmother.

If you use lossy compression, you certainly can carry more separate
programs than if you didn't use compression at all, but the channel
bandwidth remains the same.

If your compression scheme was so lossy that each separate program had
no information at all, your channel could carry an infinite number of
separate programs.

--
CinemaScope®: The Modern Miracle You See without Special Glasses!
--
Peter
 
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