Despite the clamoring for higher and higher resolution digital cameras, all it takes is one good idea and we're willing to make do with far fewer pixels.  Matty Martin's PUNCH camera concept packs both a regular CMOS sensor and preview screen with an automatic hole-punch system: once you've snapped a shot, the camera rasterizes the image, scurries an array of different-sized pins into place, and - by "punching" it onto a piece of paper - makes a physical copy of the image.

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