Re: super-8 to 16mm blowup

From: Ken Bawcom (email suppressed)
Date: Thu Apr 06 2006 - 21:34:59 PDT

Quoting Jeff Kreines <email suppressed>:

> On Apr 6, 2006, at 3:11 PM, ev petrol wrote:
>> quick question - I have to blow up 7 mins of super-8 (18 fps) to
>> 16mm (24fps) (using the millenium optic printer which I think
>> doubles every 2nd frame) ... the 16 will be a bit longer, anyone
>> have a good way to calculate how much longer?
> The running time will be the same (if you project the 16mm at 24 fps
> and the S8 at 18 fps) but the number of frames will be 4/3 the number
> of S8 games -- multiply by 1.33.
> __________________________________________________________________
> For info on FrameWorks, contact Pip Chodorov at <email suppressed>.
I think you're all off on your math. If it doubles every second frame
of 8mm 18fps, that will produce 27 frames of 16mm. 24 of those frames
will be projected in one second, leaving 3 frames. 3/24 = 1/8, or 1/8
of a second extra. So, 8 seconds becomes 9 seconds, 8 minutes becomes 9
minutes, etc. You would multiply the 8mm 18fps time by 1.125 to get the
projection time of the 16mm print.

Ken B.

"Those who would give up essential liberty
to purchase a little temporary safety
deserve neither liberty, nor safety."
Benjamin Franklin 1775

"I know that the hypnotized never lie... Do ya?"
Pete Townshend 1971

For info on FrameWorks, contact Pip Chodorov at <email suppressed>.