DBW PinholeCalc

DBW PinholeCalc is a simple exposure companion for pinhole photographers working with black and white film or photographic paper. Save your camera, enter the aperture and time your light meter gave, and get one big final exposure, then time it from your iPhone. • Cameras: save your pinhole camera by its f-number, or for a homemade camera enter the hole size and the pinhole-to-film distance and the app works out the f-number for you • Exposure: converts your meter reading to your pinhole's aperture, then applies reciprocity correction to the converted time, in the right order, with a big result and a START TIMER button • Film and paper: manufacturer-published reciprocity data for popular films, or add your own film or paper with your own reciprocity exponent, clearly labelled as your own figures • Timer: large full-screen timer that keeps accurate time and stays awake while running, with…