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Topic: Nasty vertical scratch

John Hawkinson
Film God

Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002

posted 07-11-2008 12:38 AM

And...your conclusion was?

--jhawk

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Jeremy Weigel
Phenomenal Film Handler

Posts: 1062
From: Edmond, OK, USA
Registered: Mar 2007

posted 07-11-2008 03:43 AM

Sorry, didn't see your projector/platter info.

quote: Thomas Dieter
From all the scratches that I've ever seen emulsion side, Black is the first color you get, followed by Green, Yellow, and finally White. Am I correct about this or are all my emulsion scratches going through the base and working their way through the emulsion?

The emulsion is laid down as magenta (top layer), Cyan (Middle layer), and yellow (bottom layer). Any light scratch on the emulsion side will result in green (yellow & cyan make green). Any scratch that penetrates thru the magenta & cyan layers will result in yellow with maybe a hint of green around the edges. White marks would be the absence of any emulsion with no scratching of the base. Any scratch to either side of the base(film stock) would result in a black scratch.

quote: Thomas Dieter
Having to stop the film in the projector would be very tedious, and seems like a waste of time. Inspecting all the way from the gate to the take up would be very difficult unless I un-thread the trailers. I would take and lye down on the floor and watch the film pass over me as the film is running with a flashlight above my head, but the film moves to fast to catch the fine emulsion scratches that they start out as. Along with that, I don't know if it's in the projector or on the platter.

Unfortunately the process of tracking down causes of scratches sometimes requires tedious work. You need not remove the film from the guides. In fact you wouldn't want to, since it would defeat purpose of trying to find the exact point where the film is being scratched.

Simply shine a flashlight on the film at an angle on the film when you stop it. This helps to keep the light from glaring back at you. You may even find it easier to lightly grasp the film along the edges and gently twist it while shining a flashlight on it (again at an angle).

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Jaime Tuzzio
Film Handler

Posts: 50
From: Salem, OR, USA
Registered: Apr 2008

posted 07-18-2008 06:51 AM

quote: John Hawkinson
And...your conclusion was?

Oops. Didn't mean to ignore you.

Riding on the edge of the first guide roller before the penthouse DTS reader due to the top magazine roller being moved out of position. Has to be just right, especially if there's a film cleaner added to the mix. We have the tiny black rollers going to and from the mast. I'm not a fan. I want the big, fatty ones.

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