Mark V

The Mark V version of my Time-Lapse Pinhole Camera is the current clock-based incarnation of the mechanism. Developed around July 2013 it incorporates two 24hr clocks working simultaneously, with one card shutter rotating inside the other. The top clock and shutter (attached to the lid of the nestbox) which also supports the film canister pinhole camera rotates anti-clockwise on the inside of the bottom, larger clock and shutter mechanism. The two rotating shutters allow a more pinpointed start and finish time to be set for each nightly exposure.

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Image foreground shows four of the components of the Mark V; (from left to right) pinhole camera support with clock attached, top shutter (front centre), larger bottom shutter and the nestbox behind. Copyright Anthony Carr

Image shows top shutter which hangs from lid of nestbox, including the pinhole camera. And also bottom shutter sitting inside the nestbox. Copyright Anthony Carr

Image shows both top and bottom shutter mechanisms sitting inside one another, including the pinhole camera (as they would be inside the nestbox). Copyright Anthony Carr