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How can one produce an upright image in a pinhole camera?

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Pinhole cameras are made with a very tiny hole to allow light to enter and usually no glass elements. Because of the small aperture, almost everything is dreamy and appears as focused as needed. But because of it, it's not possible to get the image upright. read more

All cameras produce an inverted image, so I would expect a pinhole camera to do the same. The pinhole camera just has a “pinhole” for a lens, rather than some pieces of glass. The LONGER explanation would require you to take a course in fundamental optics - or perhaps Physics 101B - as to the “why” this occurs in all optic systems. read more

All digital camera do produce a 'raw' image. This is the data directly from the sensor immediately after the shutter tripped and exposed the sensor. In most cameras this image is then processed in camera using the various picture algorithms and a JPEG is created. The raw data is then discarded. read more

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Further Research

11B Lab 6: Ray Optics
ipl.physics.harvard.edu