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Topic: Curved gates question
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Thomas Jonsson
Expert Film Handler
Posts: 216
From: Bromolla, Sweden
Registered: Sep 2003
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posted 06-05-2005 03:56 PM
Most curved gates have the runners attached to some kind of moving part to open it for lacing. I´ve never felt comfortable with this type of gates, since all moving parts sooner or later get worn, and then, how can I be sure they close in the exact right position. The Vic 5 gate, for example, affects focus when loosing or tightening the tension bands. And they´re new!
I feel the runners should be fixed in respect to the lens. The only types I know of is the Kinotons, with the runners facing the lens, and the DP 70 (in a way also the Bauer U2) with the runners facing the lamphouse.
In the case of the Kinotons the emulsion side faces the runners. I don´t know how much the emulsion varies in thickness, but I guess build up from the film on the runners is a bigger issue here, than in the case of the DP 70, with the film running on the base. The issue here would rather be different thickness for different filmstock.
So my question is; of those two gate types, wich one gives the best overall focus, and also (hopefully) holds it.
Thomas
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