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|---|---|---|
 Date: 2008-12-26 04:58:39Science of photography Camera lens Focal length Optics Geometrical optics Lenses |
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| First Page | Document Content | |
|---|---|---|
Date: 2008-12-26 04:58:39Science of photography Camera lens Focal length Optics Geometrical optics Lenses |
Add to Reading List |
A Lens with an Adjustable Focal Length