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Author Topic: hypothetical: Neg-Guard? Matt Hale Expert Film Handler Posts: 123 From: Vancouver, Canada Registered: Dec 2002 posted 08-01-2003 06:51 PM                        Due to a handling error, one reel of original camera negative for a film I am currently involved with (technically, only the A-roll portion of the reel) got very dirty and rather scratched in places. Fortunately through a combination of meticulous hand-cleaning and wet-gate transfer our lab has salvaged the image, and the individual responsible is paying the sizeable bill. However, all this got me thinking. Since Film-Guard is so good with dirt and scratches on prints, is there any reason it wouldn't work on a negative? Has anyone tried this? Just a thought.  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 08-01-2003 07:19 PM                    so I guess that blind transfer from the film magazine to the sealed can didn't go over to well.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 08-01-2003 07:55 PM                     It would work similar, but depending on how the lab handled the printing, it may or may not be a good idea. It would really depend on the lab and such a decision should be their call.  |  IP: Logged Matt Hale Expert Film Handler Posts: 123 From: Vancouver, Canada Registered: Dec 2002 posted 08-01-2003 08:00 PM                        I don't actually know the details of the incident. All I know is the print of that reel for our mix was delayed considerably while they cleaned it up. When I finally saw it, there was nothing significantly worse than the other reels so either the cleaner did an amazing job or it wasn't that bad to begin with. It just got me wondering...  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 08-01-2003 09:19 PM                        For optically printing or telecine transfer of the negative, a refractive index matching treatment like FilmGuard would likely help hide scratches. But in contact printing, any non-volatile material that got on the raw stock would likely have an adverse photographic effect. Long term effects on negative films would need to be independently tested using accelerated Arrhenius testing, perhaps by the RIT Image Permanence Institute.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 08-01-2003 09:53 PM                     most labs photoguard the negative after deep cleaning it first to fill in scratchs The Smitzer Wetgate printer also would be the choice to strike the dupe neg on  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 08-01-2003 10:38 PM                        Gordon is correct that the method usually used to eliminate scratches during printing is wet gate printing, either total immersion contact or liquid gate optical. The diffuse illumination (designed and built by Kodak) of the Thompson Spirit DataCine is very forgiving of scratches and surface abrasions, such that a wet gate transfer to video/digital-intermediate is often not required. In a wet gate, the index-matching solvent evaporates completely (no residue), and the film is dried before it is wound up. http://www.kodak.com/US/en/motion/support/h1/printingP.shtml#wetgate http://www.rtico.com/bhp/ http://www.mandy.com/1/class3.cfm?id=9395&ar=  |  IP: Logged

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