I have just catalogued my lens hoard and find that I have several front-of-lens auxillary optics to give wide-angle, telephoto, and fixed or variable close-up effects. There is even a series of negative dioptre lenses to extend the effective focal lengths of any view camera lens they are set in front of.
What I REALLY want is a Scheimpflug auxiliary that will permit a tilted plane of focus with any lens it is attached to? Is it practically or theoretically possible? Has anyone actually produced one? What would be involved in calculating the optical formula?
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