Tuesday 13 March 2018

focal length - Lens for 1/2" sensors, installed on a 1/3" sensor


I want to install a lens built for sensors 1/x" (with 1 <= x <= 3), on a sensor 1/3". I need to have an horizontal field of view of "a cm", when my working distance is "b cm". What is the formula of the focal length (where the lens is initially adapted for sensors 1/x") I need , please ?




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