how to test the quality of an image with a camera that is focused to infinity

by MeowStar1   Last Updated July 27, 2018 13:18 PM

this is my first question in this site so forgive me if the format is a little bit off. I have to test a camera that is focused to infinity, but I cannot take an image of an object that is more then 1.5 meters away from the camera since I can't get it out of the room itself (the room is a clean roomm, used to store the hardware in order for it to still be clean when we have to use it eventually). Is there a way to create some sort of a distance illusion ? or a any way to test the focus ? any idea is welcomed. Thank you for any help.



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