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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Scope lens not working any more?

   
Author Topic: Scope lens not working any more?
Ramin Hashemi
Expert Film Handler

Posts: 129
From: Houston TX
Registered: Sep 2004


 - posted 02-10-2008 08:32 PM      Profile for Ramin Hashemi   Email Ramin Hashemi   Send New Private Message       Edit/Delete Post 
One of our Scope lenses suddenly can not be focused any more. Other than someone dropping it, could there be another reason for this happening? I tried adjusting the lens's location in the housing (and thus changing the distance), but that did not work. Any ideas anyone?

thanks
Ramin

thanks

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Adam Martin
I'm not even gonna point out the irony.

Posts: 3686
From: Dallas, TX
Registered: Nov 2000


 - posted 02-10-2008 10:21 PM      Profile for Adam Martin   Author's Homepage   Email Adam Martin       Edit/Delete Post 
Focusing Anamorphics ... and moving to FHF.

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Dustin Mitchell
Phenomenal Film Handler

Posts: 1865
From: Mondovi, WI, USA
Registered: Mar 2000


 - posted 02-11-2008 05:12 AM      Profile for Dustin Mitchell   Email Dustin Mitchell   Send New Private Message       Edit/Delete Post 
Does the focus change as the movie progresses? If so it could be you have a loose element in the lense and as it heats up the focus shifts.

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John T. Hendrickson, Jr
Jedi Master Film Handler

Posts: 889
From: Freehold, NJ, USA
Registered: Apr 2001


 - posted 02-11-2008 09:37 AM      Profile for John T. Hendrickson, Jr   Email John T. Hendrickson, Jr   Send New Private Message       Edit/Delete Post 
There may be the possibility that the lens has been "cooked" by allowing light through the aperature for an extended period of time.

Do you know if this may have happened at the end of a show where the automation did not shut down properly for some reason?

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 02-11-2008 10:50 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
I have had Schnieder anamorphs just go soft for no apparent reason a few years ago
they had to be sent to Century Optics to readjust the internal elements that apparently had a habit of shifting over time with heat

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Martin McCaffery
Film God

Posts: 2481
From: Montgomery, AL
Registered: Jun 99


 - posted 02-11-2008 11:07 AM      Profile for Martin McCaffery   Author's Homepage   Email Martin McCaffery   Send New Private Message       Edit/Delete Post 
Have you taken the lens out and looked through it? Is it clear? I once had a lens lose its seal and it fogged up. Be sure to check after it has been in use in case there is water vapor the turns to fog with the heat. Guessing a lose element is your problem.

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Ramin Hashemi
Expert Film Handler

Posts: 129
From: Houston TX
Registered: Sep 2004


 - posted 02-11-2008 07:14 PM      Profile for Ramin Hashemi   Email Ramin Hashemi   Send New Private Message       Edit/Delete Post 
Thanks for the ideas. Either the tech or myself have tried all these. I do think someone has dropped it, but can not be sure. Will have to send it in for repair I guess. Who would be good for that?

thanks again

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Floyd Justin Newton
Jedi Master Film Handler

Posts: 559
From: Phoenix, Arizona, USA
Registered: Jun 2002


 - posted 02-11-2008 08:48 PM      Profile for Floyd Justin Newton   Email Floyd Justin Newton   Send New Private Message       Edit/Delete Post 
Who made it?
[uhoh]

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