Some time ago in this group there was a discussion about
spect ratios. I went back to that thread looking for
some of the different ratios that I thuoght were listed
there. i.e. letterbox, widescreen, 35mm, ect... 
My mistake, they wern't even mentioned.
I *used* to have them in a set of ini files, but they got
lost.
Is there anyone that knows where that thread is? Or has a
list of different "standard" aspect ratios?
Thanks
Mr. Art

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"Mr. Art" wrote:

> Is there anyone that knows where that thread is?

I'm pretty sure that was one of the Matt Giwer threads but I don't
recall which group is was in. Probably here or in .images or maybe
one of the animation groups or maybe in the IRTC groups. Since most
of Matt's activity has been in off-topic it shouldn't be too hard to
track down.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Indeed it was, Ken. Something called 16x9. I found the relevent (to me)
parts and am again happy for a while.
Mr. Art

Ken wrote:
> 
> "Mr. Art" wrote:
> 
> > Is there anyone that knows where that thread is?
> 
> I'm pretty sure that was one of the Matt Giwer threads but I don't
> recall which group is was in. Probably here or in .images or maybe
> one of the animation groups or maybe in the IRTC groups. Since most
> of Matt's activity has been in off-topic it shouldn't be too hard to
> track down.
> 
> --
> Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Ahh, lets see...According to the glossary in the book "A Short History
of Movies" we have:

Aspect Ratio.
The ratio of the width of the image(written first) to it's 
height(a constant). The standard 35mm Academy Frame(or Academy
Ratio) is 1 1/3 times wide as it is high; it's aspect ratio(1 1/3
to 1)is written 1.33:1. Other common aspect ratios are
1.66:1 (35mm European widescreen, a flat format),
1.85:1 (35mm American widescreen, also flat),
2.2:1  (70mm flat),
2.35:1 (Panavision, a 35mm wide-screen anamorphic format),
2.75:1 (70mm anamorphic).
Cinemascope began at 2.55:1 but soon changed to 2.35:1.


Remember that when you do the math for say a 2.2 aspect ratio that
the ratio really means 2.222222222 etc., otherwise you'll get weird
image sizes; for instance a width of 400 divided by 2.2 gives a height
of 181.81818 etc. when it should be 180.
Also, if you want to be technical some films use the extra width
for the soundtrack. So Lawrence of Arabia was shot on 65mm but the
final print was 70mm(5mm for the soundtrack).
I've been told that Star Wars is 2.35:1 but the trailers available
on the internet are 2.2(unless they're wrong to save file sizes).
-- 
Phil
...coffee?...yes please! extra sugar,extra cream...Thank you.

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Thanks. This should keep me busy for awhile.

Phil Clute wrote:
> 
> Ahh, lets see...According to the glossary in the book "A Short History
> of Movies" we have: ......
> 
> --
> Phil
> ...coffee?...yes please! extra sugar,extra cream...Thank you.

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