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Adjustable aperture (f-stop) and ISO film values enable you to use This App is a Light Meter with any pinhole camera setup! Just tap on the 'Aperture' or 'ISO' buttons to select your camera's settings.
Take the guesswork out of calculating your pinhole camera’s exposure time by using your phone or tablet as a light meter. The meter is designed to work with any pinhole camera, and its particularly well suited for Kelli Anderson’s ‘This Book is a Camera.’ Includes a timer to count down every second to your ideal exposure, and an inverter to reveal the final image of your pinhole negative.