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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Highlight console: regular or short arc lamps?

   
Author Topic: Highlight console: regular or short arc lamps?
Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 10-26-2004 07:56 PM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
You can use both regular horizontal lamps (for instance CXL-30R, XBO3000W/H or equivalents) and short arc lamps like CXL-20SC or XBO2000W/HS, although they recommend not to use the 3k short arc lamp.
Which type of lamp works better in your experience?

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 10-27-2004 06:31 PM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
Hello?

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Gordon McLeod
Film God

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


 - posted 10-27-2004 06:35 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
the reflector in the ultra80 and most of the older highlights was optimized for the longer arc gap of the long lamps

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Steve Kraus
Film God

Posts: 4094
From: Chicago, IL, USA
Registered: May 2000


 - posted 10-27-2004 07:01 PM      Profile for Steve Kraus     Send New Private Message       Edit/Delete Post 
Is that the proper term now for those new extra short gap bulbs, short arc? I'm asking because originally that was the term used for all movie projector type xenon bulbs. Osram, for one, still describes them that way.

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 10-27-2004 07:53 PM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
Short arc is probably not used correctly in my first post. I meant the shortened lamp. I think you are right that short arc stands for xenon lamps like we use in the cinema in general. At least in German it does ("Kurzbogenlampe").
The new 4k GS lamp from LTI which was shown to us at the recent Strong seminar in Omaha does have a shorter gap and a smaller vessel with higher internal pressure.
If you go to ltilamps.com, you can see that presentation under Press Releases.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 10-27-2004 09:18 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Yes, the shorter lamp will fit with the appropriate adaptors and yes, it will give you a bit more light.

One thing none of the lamp manufacturers will tell you oughtright about is that the short gap arc lamps have drastically shorter life..... it goes with the size I guess. It is printed in the lamp specs though. Hopefully, eventually, these lamps will have the same or close life span to regular gap lamps sometime in the future.

Mark @ CLACO

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John T. Hendrickson, Jr
Jedi Master Film Handler

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


 - posted 10-29-2004 04:41 PM      Profile for John T. Hendrickson, Jr   Email John T. Hendrickson, Jr   Send New Private Message       Edit/Delete Post 
Michael-

I have Highlight II consoles and use Osrams.

For 2K &3K: H OFR
For 4K: HS OFR

I am happy with them and see no reason to switch. [Big Grin]

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