|
|
This topic comprises 6 pages: 1 2 3 4 5 6
|
|
Author
|
Topic: How do you thread --- and why?
|
|
|
|
|
|
|
Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
|
posted 11-11-2008 11:33 PM
Oh Jeez. I've worked with both types of Autos and can deal with either. The olden SPA-3 was charming in that it used a start cue and had no real timing function to it. It also couldn't ever burn up your changeovers. I actually liked the SPA-3, for what it was.
By and large though, all of the theatres I've worked for used countdown leaders...they are cheap and effective, plus they are available in multitudes of lengths prior to the countdown. You'd have to be brain dead to now be able to thread up consistantly.
Either way works.
And as to not adding any dirt or damage by threading in the coundown area...sorry...you are just plain wrong. Dirt migrates, period. Your hands can't be clean enough. The part of the leader you touch, will wrap onto the next revolution which transfers a portion of the dirt, which eventually tranfers it to the next wrap and so on.
Think about the arch-typical changeover house of your...they always telegraphed their changeovers as the dirt would speckle the screen even before he cues. Why? no one ever touched the tail near the picture...the just let the film tail out and then before they could shut the machine down, the take up reel would slap the tail on the floor...that is where it started...the dirt/oil then started its migration on back. Things were better when people had magazines instead of just reel arms as the dirt level could be controlled.
When I ran a booth regularly...I put a relatively large amount of scrap film on both the head and tail, used magazines when ever possible too. I also never let the heads/tails slap around after a c/o or rewind. If the scrap started to show its age, change it.
After Film Guard came out, I added that to the arsenal of keeping the film spotless.
In the screening rooms I operate, I use PTR rollers. The prints are often EK type and the shows are 1-offs. The PTRs are changed every reel and every time the film runs through the machine there will be a PTR pass (including tests/run-throughs). Net result...zero visible dirt.
I don't recommend PTRs for platter or even long-reel use and when used they need to be changed (cleaned) on each reel to be effective. You never want a PTR to "fill up". They are great at keeping dust off and keeping dirt from accumulating. They don't do well at cleaning a dirty film...which is generally not an issue for an EK print.
Steve
| IP: Logged
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
All times are Central (GMT -6:00)
|
This topic comprises 6 pages: 1 2 3 4 5 6
|
Powered by Infopop Corporation
UBB.classicTM
6.3.1.2
The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion
and agrees to release the authors from any and all liability.
|