| 11. | These taken together produce an " H-stop " designation which approximates the corresponding f-stop of a normal lens.
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| 12. | Telecentric lenses tend to be larger, heavier, and more expensive than normal lenses of similar focal length and f-number.
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| 13. | This might work similar to how jewelers and some others wear special glasses with one microscope lens and one normal lens.
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| 14. | I'll await other editors'decisions on this and in the meantime prepare another example for article Normal lens which certainly needs one.
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| 15. | A camera with rising front lets a normal lens be raised to include the top of the building without tilting the camera.
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| 16. | The Russians believed that 58mm more closely matched the Human normal range than the standard 50mm used worldwide as a normal lens.
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| 17. | For example, consider a normal lens for a 35 mm camera with a focal length of " f " = 50 mm.
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| 18. | The camera was a retired Technicolor three-strip camera modified to use two films, and used normal lenses for the conventional 1.85-1 aspect ratio.
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| 19. | The design appears in other applications where a simple fast normal lens is required ( ~ 53?diagonal ) such as in projectors.
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| 20. | Unlike the implanted lenses that replace the eye's normal lens to correct cataracts, this lens is implanted in front of the natural lens.
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