Definitions
from the GNU version of the Collaborative International Dictionary of English.
- noun (Optics) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Alternative spelling of
diopter .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
Etymologies
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Examples
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A dioptre adjustment wheel is immediately adjacent, enabling the short sighted to use it without clashing spectacles.
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The second way to compose your images is the electronic viewfinder, which juts out from the rear of the camera and helpfully offers dioptre control for glasses wearers.
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It features multi-coated optics which ensures superior light transmission, built-in range finder reticle, individual dioptre focus etc.
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The second way to compose your images is the electronic viewfinder, which juts out from the rear of the camera and helpfully offers dioptre control for glasses wearers.
Photography Blog - News Mark Goldstein 2010
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• Magnification 1. 4x (equivalent to 0. 7x on a 35mm camera / 50mm lens) • Dioptre adjustment -4 to +4 dioptre
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• Magnification 1. 4x (equivalent to 0. 7x on a 35mm camera / 50mm lens) • Dioptre adjustment -4 to +4 dioptre
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• Magnification 0. 96x with a 50mm lens and -1 dioptre
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• Magnification 1. 02x with a 50mm lens and -1 dioptre
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• Magnification 1. 15x with a 50mm lens and -1 dioptre
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• Magnification 1. 02x with a 50mm lens and -1 dioptre
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