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It seems that the camera will be in a (fairly) fixed position, while the item you're photographing will always be the surface of a cylinder. The "distortion" in this case is not caused by the lens, but by the shape of the cylinder. The way scanners handle this problem is to scan a single pixel strip that runs the length of the cylinder. This would require ...


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I suppose the least lens-distorted rectangular part of a shot is defined by the focal length of lens I'm using, but I'd like to know which part it is exactly, or at least how to calculate that part. I think you really need to start here: What is the difference between perspective distortion and barrel or pincushion distortion? ... because there are ...


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