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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Prevost P70 focus motor - help needed

   
Author Topic: Prevost P70 focus motor - help needed
Matthew Taylor
Expert Film Handler

Posts: 186
From: Essex, UK
Registered: Mar 2004


 - posted 06-09-2005 05:01 PM      Profile for Matthew Taylor   Email Matthew Taylor   Send New Private Message       Edit/Delete Post 
Please can anyone tell me how to get the remote focussing motor working on a Prevost P70. I presume it is possible to wire two switches somewhere to enable the motor to move back and forth but I can't find where. My Manual doesn't contain the relevant information.

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Jason Miller
Expert Film Handler

Posts: 241
From: Little Rock, AR,
Registered: Mar 2004


 - posted 06-09-2005 08:48 PM      Profile for Jason Miller     Send New Private Message       Edit/Delete Post 
If you can manually move the focus adjustments without the motor, I wouldnt even bother hooking it up.

the Christie SLC and Big Sky consoles have motorized focus adjustments that occasionally freeze in the wrong position. thereby causing small amounts of blistering on the film.

I would set lamp focus for Scope picture and leave it.

EDIT - heh. woops. had something else on the brain. I'll shutup now.

[ 06-10-2005, 02:59 PM: Message edited by: Jason Miller ]

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003


 - posted 06-09-2005 11:33 PM      Profile for Sam D. Chavez   Author's Homepage     Send New Private Message       Edit/Delete Post 
I believe it the projector focus being referenced here.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 06-09-2005 11:37 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Actually we have one customer in Nevada that has a pair of P-90's. These machhines are over 20 years old but still look and run like new. I just changed the belts for the first time last summer! This customer makes full use of the remote focus and loves it. I've tried it and it works very effectively.

Mark

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Kenneth Wuepper
Phenomenal Film Handler

Posts: 1026
From: Saginaw, MI, USA
Registered: Feb 2002


 - posted 06-10-2005 06:02 AM      Profile for Kenneth Wuepper   Email Kenneth Wuepper   Send New Private Message       Edit/Delete Post 
What a great tool!

Now you can stand beside the screen and focus the image. What a great way to make the best possible image on your screen.

Several of our Travelog speakers have made their own remote focus rigs for the Bell & Howell arc lamp projectors they carry with them. These were usually radio controlled servos from the model airplane hobby shop. Very effective and the owners seemed to have few problems with them.

KEN

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000


 - posted 06-10-2005 07:26 AM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
Most of the Kodak screening rooms have remote focus capability for the 35mm projectors. Very easy to get perfect focus when you are close to the screen. [Cool]

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