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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Lenses - Getting new ones, need advice
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Steve Kraus
Film God
Posts: 4094
From: Chicago, IL, USA
Registered: May 2000
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posted 07-24-2002 11:47 PM
Blue...
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Manny Knowles
"What are these things and WHY are they BLUE???"
Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 08-18-2002 08:43 PM
Okay, time for a followup...This location will be moving in less than 2 years, so I decided to go with a complete set of ISCO Ultra MC and ISCO Ultra Anamorphic lenses. The flat lenses will be new.
The scope lenses and anamorphic adapters will be used. Any word on how happy I can expect to be with these? Never mind that they are used. Assume that they were well taken care of. Does this line have a good reputation?
Thanks for your help.
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Manny Knowles
"What are these things and WHY are they BLUE???"
Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 09-19-2002 09:50 PM
Wow! I found one "spare" anamorphic adapter lying around and it was an Isco (gold). It made a big difference on this projector I just re-did. To satisfy my curiosity, I switched the backup lens (it was fried) with a somewhat spiffier one from the other projector I'm about to start working on and the overall difference is like night and day. We also did some work on aligning the lamp house, but there was only so much we could do. It's an ORC vertical 1600W model and the bulb adjustments don't really help all that much. But moving the entire reflector around helped some. Also, the dichroic mirror may need some attention because it turns out that the cooling fan was removed. God only knows how long that mirror has been without that fan and what the damage might be. I can't wait for my new Isco's to arrive.
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Aaron Sisemore
Flaming Ribs beat Reeses Peanut Butter Cups any day!
Posts: 3061
From: Rockwall TX USA
Registered: Sep 1999
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posted 09-22-2002 02:40 AM
Any anamorphic with less than 5" diameter shouldn't cast a shadow on the flat picture if mounted in a standard turret.It is usually the 'big' (around 5" diameter at the widest) older Isco-Gottingen and Japanese anamorphics that cause this problem. The later model Isco Ultra*Star and Schneider full-size anamorphics do not usually cause this problem, and the Isco Blue*Star (and other compact/integrated anamorphics) absolutely will not. The Isco Blue*Star (and almost all other 'compact' and 'integrated' anamorphics) are approximately 80mm in diameter at the widest, and the distance the lens protrudes from the turret mount will vary depending on the turret design and the focal length of the lens. -Aaron
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Steve Guttag
We forgot the crackers Gromit!!!
Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 09-22-2002 11:08 AM
Actually, Steve Guttag always recommends using the ISCO Blue-Star for anamorphic lenses whenever they will physically fit/work. They are THAT much better than the others.If you are forced to use integrated amamorphics, then use them but they are inferior. Schneider's are more flexibile since they allow you to change the prime lens just like the full size anamorphics. With ISCO you have the Ultra-Star Plus which are quite light efficient. In general, the ISCO anamorphic will out class the Schneider anamorphic though, as Mark G says, the Schneiders have gotten better (at focus) they still magnify the image willy nilly (mostly too wide). If you can get the Blue-Stars...get em! You won't regret it. Steve ------------------
"Old projectionists never die, they just changeover!"
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If you do not require integrated it is better to go with conventional since there us usually more metal to obtain better seating in a turret. The ISCO integrated tend to be that....one lens unit, while the Schneider integrated tends to be adapter and prime with proper conversion ring which allows them to be taken apart if you desire to make a change on focal length on the prime....which for a dealer can be convenient due to shipping charges and stocking. whatever you pick will be a tremendous improvement of what you see now. Say hello to John Burgholzer........
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