16:52 Oct 24, 2015 |
English to French translations [PRO] Tech/Engineering - Photography/Imaging (& Graphic Arts) | |||||||
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| Selected response from: Daryo United Kingdom Local time: 22:29 | ||||||
Grading comment
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Summary of answers provided | ||||
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3 +4 | un avantage de deux diaphragmes |
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4 +2 | améliorer le réglage de deux crans // jouir d'un avantage de deux crans |
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Summary of reference entries provided | |||
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Un gain de deux diaphragmes |
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améliorer le réglage de deux crans // jouir d'un avantage de deux crans Explanation: ce bidule vous donne un avantage de deux crans etc.. "stops" are stops on rings on photo or camera lenses that are used to set the exposure of the film to light [nowadays more likely to be marks on some LCD control screen]; one for timing the exposure the other one for the opening of the diaphragm - these "stops" are set on a logarithmic scale one "stop" is usually giving twice the light or twice the time of exposure; there is complex interaction between the opening of the diaphragm, the exposure, the sensitivity of the film, the depth of field of the lenses and the allowable speed of movement of the subject that combine to get a sharp picture; getting sharp pictures of moving objects is not easy, and requires either high sensitivity film or sacrificing the sharpness of the pictures; what this ST is saying is that because this anti-shake device reduces the apparent speed of movement of whatever is being recorded, you can improve the combination "exposure times opening of the diaphragm" by two "stops" and still get pictures that are as sharp as they would without the anti-shake device [but by having to add two "stops" to your settings]; IOW the "advantage" is that thanks to this anti-shake device you can get a sharper picture by closing the opening of the diaphragm or get away with less ambient light by prolonging the exposure for two "stops" - whichever parameter you are playing with, you can afford to have two "stops" less and still get a nice sharp picture. -------------------------------------------------- Note added at 37 mins (2015-10-24 17:29:50 GMT) -------------------------------------------------- https://en.wikipedia.org/wiki/F-number https://en.wikipedia.org/wiki/File:Lens_aperture_side.jpg -------------------------------------------------- Note added at 43 mins (2015-10-24 17:35:52 GMT) -------------------------------------------------- http://www.mir.com.my/rb/photography/fototech/apershutter/ap... |
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Grading comment
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4 mins confidence: peer agreement (net): +4
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