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3 perf table


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#1 Matias Nicolas

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Posted 03 December 2010 - 09:56 PM

well, im shooting in 3 perf next week, and need the table with the info of relation between , time duration and mts "running" ... how much time is a 120 mts with 3 perf x ex...! thanks !
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#2 Chris Keth

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Posted 04 December 2010 - 12:40 AM

16 4-perf frames per foot. That's 64 perfs/foot.

64 perfs/3=21.3 3-perf frames per foot.

24/21.3=1.127 feet per second

120 minutes is 7200 seconds; 7200*1.127= 8120 feet (rounded up to the ten)
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#3 Mark Dunn

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Posted 04 December 2010 - 06:31 AM

I think the OP means 120 metres (400ft), not minutes.
4-perf runs at 90ft/min. Running times increase by one third, footage required for said running time reduces by one quarter. So 3-perf runs at 67.5 ft/min; a 120m (400ft) roll runs 4 minutes 26 2/3 seconds in 4-perf, 5 minutes 55 1/2 seconds in 3-perf.
Simples.
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#4 Matias Nicolas

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Posted 04 December 2010 - 07:49 AM

sorry I just need to know this : 35mm 4 perf 120 mts is aprox 4min 20 secs.. ,
35 mm 3 perf 120 mts , how much time is? could be 5 min 30 sec? do you know if there is a table?
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#5 Michael Kubaszak

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Posted 04 December 2010 - 10:06 AM

sorry I just need to know this : 35mm 4 perf 120 mts is aprox 4min 20 secs.. ,
35 mm 3 perf 120 mts , how much time is? could be 5 min 30 sec? do you know if there is a table?



At 24fps 5 minutes 49 seconds.
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#6 Matias Nicolas

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Posted 04 December 2010 - 08:09 PM

thanks Michael !
and do you know or someone knows were can I find a table in the internet with all the timings?
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#7 Fred Neilsen

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Posted 04 December 2010 - 08:17 PM

thanks Michael !
and do you know or someone knows were can I find a table in the internet with all the timings?


Film Calculator is a great widget for the mac (It may be an iphone app aswell) you just type in your feet/meters of film, your format (anything from 8mm to Imax) and it gives you the running time.


(One drawback though, is that you cant convert running time to feet/meters required - meaning you have to type in a number of feet, then ad or subtract, repeating until you get the correct value)

You can download it here.

http://www.filmsourc...on_widgets.html

Fred
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#8 cassie clayton

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Posted 31 January 2011 - 03:07 PM

http://www.digitalre.../film_calc.html
This is what you need
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