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April 2nd, 2006, 10:24 AM
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#1 |
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Major Player
Join Date: Dec 2003
Location: Brooklyn, NY
Posts: 636
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Century Optics Achro Powers and Focal Length?
How are the two numbers related? The Century Optics +7.0 achromat is what equivelant FL?
__________________
Realism, anyway, is never exactly the same as reality, and in the cinema it is of necessity faked. -- J-L G |
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April 5th, 2006, 12:10 AM
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#2 |
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Major Player
Join Date: Dec 2003
Location: Brooklyn, NY
Posts: 636
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So I called CO today and asked them this exact question and got a funny response: we can't tell you that information because then you could make an achromat that works just as well as ours.
My only thought was: Exactly!
__________________
Realism, anyway, is never exactly the same as reality, and in the cinema it is of necessity faked. -- J-L G |
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April 5th, 2006, 01:23 AM
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#3 |
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Major Player
Join Date: Jun 2005
Posts: 356
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approx 143mm fl, thanks.
Quyen |
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April 5th, 2006, 01:36 PM
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#4 |
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Major Player
Join Date: Dec 2003
Location: Brooklyn, NY
Posts: 636
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So how does that relate to the GG position, then? Mine is about 55mm away from the Achromat, and focuses fine. What does FL describe, if not the distance of the subject to the lens?
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Realism, anyway, is never exactly the same as reality, and in the cinema it is of necessity faked. -- J-L G |
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