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Author Topic: projector speed question
Chip Gelmini
Phenomenal Film Handler

Posts: 1733
From: Brooksville, FL
Registered: Jun 2003


 - posted August 01, 2009 11:54 AM      Profile for Chip Gelmini   Email Chip Gelmini   Send New Private Message       Edit/Delete Post 
Hello to all.

Can someone tell me the footage per minute running 16mm at 18 frames per second silent speed. I know this is the 8mm half of the forum but I also know some of you might know this answer for me.

Thanks.

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Chris Smith
Film Handler

Posts: 67
From: Aston, Pa. USA
Registered: Dec 2003


 - posted August 01, 2009 12:49 PM      Profile for Chris Smith   Email Chris Smith   Send New Private Message       Edit/Delete Post 
27 feet a minute at 18fps

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John Whittle
Jedi Master Film Handler

Posts: 791
From: Northridge, CA USA
Registered: Jun 2003


 - posted August 01, 2009 05:01 PM      Profile for John Whittle   Email John Whittle       Edit/Delete Post 
File under more than you wanted to know:

16mm film = 40 frames per foot so:
18x60 / 40 = 27
16 (fps) x 60 (sec) / 40 (frames per foot) = 24
24 (fps) x 60 (sec) / 40 (frames per foot) = 36

(35mm is 16 frames to the foot, Regular 8mm is 80 frames per foot and Super 8mm is 72 frames per foot. Sub the value in the formula for the format you want to compute).

John

(In our next little chat, perchance we'll discuss pitch and the variants of negative an positive pitch and how it affect printing and why it wasn't necessary during the nitrate age--then there's peforation types and why they exist--and ....)

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