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reciprocity failure

   Also found in: Encyclopedia, Wikipedia 0.03 sec.
reciprocity failure
n
(Miscellaneous Technologies / Photography) Photog a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values


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There are reference appendices on exposure values and reciprocity failure, plus a glossary.
Technical details like f-stops, shutter speeds, and depth of field * Accessories like macro lenses, extension tubes and teleconverters, 81A, neutral density, and polarizing filters * Mirror lockup * Reciprocity failure * My neighborhood * Wildlife * Old cars * Sports/action photography * Respect for the subject * Shape vs.
If reciprocity failure is observed, then the slope of these curves at any point represents the value of the Schwarzschild p-coefficient.
 
 
 
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