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Author Topic: Question on lenses for BX80's
Sam Hunter
Jedi Master Film Handler

Posts: 779
From: West Monroe, LA, USA
Registered: Jan 2002


 - posted 06-09-2003 02:58 PM      Profile for Sam Hunter   Email Sam Hunter   Send New Private Message       Edit/Delete Post 
I just received a 2" lens (Cine Navitar 51mm) for my BX80 and when I use it the image is rounded at the bottom. I checked and found that the light from the lens is hitting the front insides of the lens holder assembly. I was using a 61mm lens before and I guess I will have to stick with it.
The question is this: Is there a lens that will fill a 7'8" screen at a 19' throw for widescreen that will work properly in my BX? I really don’t think there is unless I go to a zoom attachment. Any suggestions?
Here are a couple of shots of my lens holder and lens.

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Thanks!

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Jeff Stricker
Master Film Handler

Posts: 481
From: Calumet, Mi USA
Registered: Nov 1999


 - posted 06-09-2003 05:58 PM      Profile for Jeff Stricker   Email Jeff Stricker   Send New Private Message       Edit/Delete Post 
Sam I'm using a 2" Wollensak f/1.9 lens on my BX-40. Same lens holder as your BX-80. With it focused and a 15 foot throw, the image mkaes it out of the front of the lens holder without being cut off. Maybe the front your lens (owing to its optics) is further back in the holder than with my lens [Confused]

best, Jeff

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Josh Jones
Redhat

Posts: 1207
From: Plano, TX
Registered: Apr 2000


 - posted 06-09-2003 07:13 PM      Profile for Josh Jones   Author's Homepage   Email Josh Jones   Send New Private Message       Edit/Delete Post 
Is the lens so far back in the lens holder itself that the corners of the image hit the holder's barrel? That would be where I would look. Also if you are using a magnacom or something similar, you can have this problem as well.

Josh

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Sam Hunter
Jedi Master Film Handler

Posts: 779
From: West Monroe, LA, USA
Registered: Jan 2002


 - posted 06-09-2003 08:16 PM      Profile for Sam Hunter   Email Sam Hunter   Send New Private Message       Edit/Delete Post 
Its the lens design, so I am going to try and find something else. [Frown]

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