Re: [Digital BW] Re: Framing again - Aspect Ratios
2005-11-13 by Gary Brown
Not all films have the ratio 4:3. Don't you remember when you were young and movie theaters would open the drapes to reveal the screen. The trailers were shown in one ratio, then as the feature started the drapes would open wider for the "wide screen" film. Also when you see a film advertised as 70mm the image is only 65mm with the additional 5mm for the sound. When you see an Imax film, it is shot in a way that each frame is 70mm square, with the sound on a separate machine. Gary
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----- Original Message -----
From: "Clayton Jones" <cj@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Saturday, November 12, 2005 5:40 PM
Subject: [Digital BW] Re: Framing again - Aspect Ratios
>Silent film images were 1" by 0.75", 16 per foot, with an aspect
>ratio of 4:3. The film ran vertically through the camera and
>projector.
>
>When movie film was adapted for use in still cameras ("minicams"),
>the space for two movie images was allocated to each still image,
>and the film strip was oriented horizontally in the camera. This
>resulted in still images of 1.5"(2 x 0.75) by 1", 8 per foot, with
>an aspect ratio of 3:2. (Actual metric image dimensions are
>slightly smaller, 36mm by 24mm, to avoid the sprocket holes and
>frame overlap.)
Thanks for the info, it all very interesting. I didn't realize until
this thread that movies are 4:3.
Regards,
Clayton
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