8mm Forum: OSI's mag striping service ...

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Topic: OSI's mag striping service ...

Brad Miller
Administrator

Posts: 525
From: Dallas, TX, USA
Registered: Jun 2003

posted September 21, 2013 02:58 PM

When striping prints, it actually is pretty important to ensure BOTH stripes are applied. The reason for the second stripe isn't there so much for the use of stereo, but for its original intent of "the balance stripe", which should be taken literally.

If the balance stripe on the perforation edge isn't there, the film won't wind evenly onto reels AND can cause focus issues when projecting since the film won't be laying flat in the gate. Some projectors deal with this better than others, but the lower f/stop of your lens (such as the Elmo f1.0), the worse the problem will project to the screen.

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Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

posted September 21, 2013 07:29 PM

Totally agree with Brad's comments. The balance stripe is absolutely essential for uniform focus across the width of the screen. Unless of course you are lucky enough to have one of the very few S8 sound projectors with a rear sprung gate.

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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
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Osi Osgood
Film God

Posts: 10204
From: Mountian Home, ID.
Registered: Jul 2005

posted September 22, 2013 09:10 AM

Well, this is sadly a done issue, but note that this would have been one stripe mono striping in the first place. This old machine was never designed to do the two stripe stereo style super 8 mag striping, though I totally agree that the two stripe (allowing for stereo if desired) is certainly preferrable for the above reasons.

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"All these moments will be lost in time, just like ... tears, in the rain. "

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Robert Crewdson
Phenomenal Film Handler

Posts: 1031
From: UK
Registered: Jun 2013

posted September 22, 2013 09:19 AM

Walton Films never had a balance stripe, I think they were the only seller in the UK that didn't have one.

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Douglas Meltzer
Moderator

Posts: 4554
From: New York, NY, USA
Registered: Jun 2003

posted September 22, 2013 02:01 PM

Osi,

Sorry this didn't work out.

I have a number of early Castle Super 8 releases that only have a main stripe. I believe Techno Films didn't bother with balance either.

Doug

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I think there's room for just one more film.....

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Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

posted September 22, 2013 02:22 PM

Which of course raises the obvious question - why did the vast majority of Super 8 sound projector manufacturers opt for the front sprung gate, when it is so obvious that a rear sprung gate totally eliminates all concern about stripe thickness and stripe uniformity? Elmo and Eumig and others, were all making high end projectors and none of them, except Beaulieu, went with the correct design, which is a rear sprung gate.

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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj

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Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

posted September 22, 2013 06:56 PM

I agree with the above comments regarding the need for a balance stripe, however if you are stuck and really want sound, then look out for a Rexette. I used one years ago, as long as you can still get the cement and stripe the little Rexette striper is a real breeze to use, and it does a nice job, but it only "main track"

The thing which is really important with all this and that's cleaning the film first. I am not sure what chemicals are around these days that you can use safely on Acetate film stock.

With the Rexette you can stripe 400ft of film quickly as the projector is being used for this. If I remember right it runs at the 18fps setting.

Graham.

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Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted September 22, 2013 07:53 PM

Just a guess, but maybe a front sprung gate means the surface that the claw operates through is a solid piece and it makes for less uncertainty in the insertion depth of the claw? (-a fixed reference level?)

Maybe with a rear sprung gate and a thin piece of film the pushing is out at the claw tips and it makes them more likely to bend?

-at least with a front sprung gate, regardless of the thickness of the stock the film can be resting at the bases of the claw tips where they are strongest.

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All I ask is a wide screen and a projector to light her by...

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Lee Mannering
Film God

Posts: 3216
From: The Projection Box
Registered: Nov 2006

posted September 23, 2013 03:09 AM

We have been using the Rexette since the 70’s which is a basic 8mm striper but works. The real secret is to make sure the film to be striped is 100% clean as even a finger print can make the stripe come away. Had a brief dalliance with a Bolex striper but it was worn and so returned to the Rexette which has given good results and modified mine to take 600ft reels of stripe. Keep looking Osi you will find a good striper and be in business.

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David Ollerearnshaw
Phenomenal Film Handler

Posts: 1373
From: Penistone Sheffield UK
Registered: Oct 2012

posted September 23, 2013 03:16 AM

Not all Walton films omitted the balance stripe. I think this was just a cost saving exercise by them. I have more with the balance stripe than none.

I seem to remember in the two magazines at the time readers letters was featuring complaints almost every month, plus the reviewers highlighted the problem.

They did start using it again.

None of my Techno Films has a balance stripe.

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James N. Savage 3
Phenomenal Film Handler

Posts: 1375
From: Washington, DC
Registered: Jul 2003

posted September 23, 2013 07:24 AM

I have some UFA (German) prints with only the main stripe.

James.

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Robert Crewdson
Phenomenal Film Handler

Posts: 1031
From: UK
Registered: Jun 2013

posted September 23, 2013 07:47 AM

David, were these early Waltons?; I think all mine only have a main stripe, and I was buying L&H 2 reelers soon up to the time they closed.

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David Ollerearnshaw
Phenomenal Film Handler

Posts: 1373
From: Penistone Sheffield UK
Registered: Oct 2012

posted September 23, 2013 12:44 PM

Of the two I just checked "Shalako" (scope) doesn't have balance track. The other "Monty Python's Holy Grail" does.

We hope to start the weekend shows in October and I'll be watching some of my Walton features, I'll report back.

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I love the smell of film in the morning.

http://www.thereelimage.co.uk/

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