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"sharp things" - slit camera
A variant of Pinhole and Zone plate, the slit camera. In the T2-adapter I mount instead of the zone plate, the halves of a razor blade in 0.3 mm Distance. - If the slot is as long as the film format, everything is resolved in horizontal or vertical lines of color - it is clearly nothing more.
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In the next example, the slot is shorter, the shadowy outline of the avenue trees looming. Would be reduced to the square, the resulting image would be similar to that of a round pinhole. In the right picture I shortened by cardboard mask to 2 mm. The result is the approximation to a receptacle with a hole.
A small gallery of images from "Slitcam" I have to flickr published.
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