The sun is 100% flicker-free and some light types including tungsten and electronic ballast fluorescent approach this performance.īut put a magnetic ballast behind a gas discharge-type lamp and you can prepare for intermittent lighting issues. The more intermittent the light output, the more likely that your very short exposure may be timed to coincide with that light's low cycle. While some lights exhibit very little flicker, some lights are far more intermittent in their output than others. While those lights may appear to be very constant (and they may indeed be above the flicker fusion threshold/rate where intermittent light appears constant to us), they may not be so. The cause of this problem is usually not the camera, but the light themselves. Shooting action sports with a fast frame rate is most frequently the source – most of these images will appear properly exposed but an intermittent dark image glaringly appears. The problem images generating the question have usually been captured under fluorescent or gym/arena lighting and a short exposure was often used. Unfortunately, the resolution of the problem is not as easy as sending the camera in for repair.
Most encountering this problem are very concerned that their camera has a problem – perhaps with the shutter.įortunately, the camera is not usually the problem.
Sony FE 20-70mm F4 G Lens Goes to the George Peabody Library, Baltimore.
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