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recording duration of a 50' magazine


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#1 Ian Heggen

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Posted 26 March 2007 - 08:26 PM

I have a quick question about how much recording time one would expect with a 50' magazine.

On Alan Gordon I read 75 seconds with 24fps, which seemed pretty short to me.
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#2 Nick Mulder

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Posted 26 March 2007 - 08:36 PM

Nope,

thats about right ...

http://www.panavisio...calcfootage.asp

theres always the top and tail that will be unused/exposed (tail exposed if you unload in light, at the very min a foot and a half unused due to threading and thats in the dark also) - the smaller the load the higher the % is taken up with unusable film
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#3 Corey Bringas

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Posted 26 March 2007 - 09:00 PM

I got about 83.3 seconds http://www.kodak.com...Calculator.html :-D
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#4 Nick Mulder

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Posted 26 March 2007 - 09:11 PM

I got about 83.3 seconds http://www.kodak.com...Calculator.html :-D

Yeh, thats what youd get if you could get every frame exposed correctly. Both calcs give that answer, but its not the reality of the physical situation of a 50' loaded daylight reel - 75 seconds is a pretty good 'safety' figure considering what I have already outlined...
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#5 Corey Bringas

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Posted 26 March 2007 - 09:16 PM

good point. usually I gestimate roughly 5' heads 5' tails :-D
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#6 Ian Heggen

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Posted 26 March 2007 - 09:21 PM

Thanks! those are both very useful tools.
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Aerial Filmworks

Visual Products

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CineTape

Paralinx LLC

The Slider

Rig Wheels Passport

Media Blackout - Custom Cables and AKS