Reel to Reel and the Super 8mm

[Konton]

Out of curosity, how fast is 24fps for Super 8mm really? I mean isn't that the same speed as a Reel to Reel players? I recall that when they made the Mag IV they modified it from the 5mm width of the tape to 8mm for the mag film. Just wondering.

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Konton the Grey

[rollemfilm]

magnetic film was designed to rec/run at 24 fps because you actully cut the mag film with the picture film. mag film also has sprockets to use on a flatbed and to be able to sync with special projectors. for field use, it does not matter (for sync not quality) what speed you record at. what matters is a perfect constant speed for the recorder and the camera. if you decide to edit with film, you can transfer any audio to mag. if you decide to go the digital editing or video way of editing, just properly dub your audio to those sources. reel to reel has several speeds. i would not recomend any speed below 7 1/2 ips. 15 isp is better, 30 isp would be over kill for most needs.

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[Konton]

I think you misunderstand my question. Or maybe you are responded to a different post and accidently posted here. One of those two.

If I out Super 8mm film or even mag film in a Reel to Reel player, will it run at 24fps at what speed? You said 7 1/2 ips. So is that 24fps?

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Konton the Grey

[rollemfilm]

here is a footage breakdown foe (reg) 8mm. i don't have one for super8: 7 seconds @ 24fps = 2 1/10 feet of film. 10 seconds @ 24 fps = 3 ft of film. hope this helps some...

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[Konton]

Thanks for the info. I think I figured it out thought myself. My frame counter shows there to be 72 super 8mm frames in 1 foot or 6 frames in 1 inch. So that means that 24 frames take up 4 inches and 18frames take up 3inches.

Since a good quality recording speed for a reel to reel is 7-1/2ips in a 5mm width of magnetic tape, you can't expect good quality of 3ips or 4ips of .027 inches of space made for the magnetic stripe.

Anyway I was really just curious if an average reel to reel would run Super 8mm at 24fs. But it won't since they were never designed for 4isp. I guess that's why Super 8 sound could only use specific reel to reel models to make Mag Recorders from.


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Konton the Grey

[#Pedro]

This speed difference is why in Europe perfo tape was so popular. The tape is simply perforated in a way, that it can run at standard tape speeds (9,5 or 19,05 cm/s), outputting the correct frame rate at the same time when reading the perfo holes with a simple opto coupler. This way you can realize excellent sound quality with tape, locked-coupled to film.
The sound quality not only depends on the speed, but on the contact to the sound head, too. As film is a very thick and un-flexible material, there never will be a good contact to the magnetic heads, as a thin polyester tape has.
I can only recommend to go into the adventure to use and love perfo tape. It?s availlable and simple to use. Electronic coupling with film and counting of holes makes film editing easy and obtains a sound quality, that only depends on the tape machine used. It can be good enough for CD mastering, never achievable with fullcoat recorders.

Pedro

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