Subject: Re: Z-film Speed Problem
Date: Sun, 28 Nov 1999 01:05:44 -0600
From: Joe Durnavich <joejd@mcs.net>
Organization: MCSNet Services
Newsgroups: alt.conspiracy.jfk

John wrote:

>    I was a camera salesman in the middle 1960s when the transition from
>the 16
>frame regular eight mm format to the 18 frame super 8 format was in
process.
>    We stressed the higher fframing speed as making for better pictures.
>iZapruder's camera was a reg 8 format.  The ASA (American Standards
>Association) specifications for the reg 8 format is 16 frames per second.
>   You cud look it up.
>>
>>John in VA

It's not that straightforward.  From the October 26, 1964 American
Standard Specification for Camera Usage of Double Width 8 mm
Motion-Picture Film, Perforated Two Edges:

"American Standard Specification for Projector Usage of 8 mm
Motion-Picture Film, Perforated One Edge, PH22.22-1964, indicates a
normal projection rate of 18 frames per second for silent films.  This
projection rate has been in use for some time and is recognized by the
current standard.  In order that action may be reproduced at normal
speed, the camera frame rate should be the same as that of the
projector.  Accordingly, this revision of PH22.21 raises the silent
frame rate from 16 frames per second to 18 frames per second rate in
actual use at the time of this revision."

--
Joe Durnavich