Mechanical shutter are lesser accurate-precise by their innate workings. Thus was born the electronic shutter which improved this in various ways.
The alternative method to achieve accurate-precise exposure of film is to used high quality electronic strobe-flash which is not nearly as dependent on shutter open-close times. Or why this was the overly preferred method of color transparency film exposure required for proper high quality color transparency image work back in the day. A properly calibrated and stable electronic flash system of lens aperture, film batch tested for actual film speed and all related produced consistent and reliable image results to 1/3 f-stop or better.
Bernice
Originally Posted by Tin Can
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