For Blender users, there is an official fSpy importer add-on that sets the parameters of the Blender camera and optionally sets the camera background image. Follow these instructions …

However, fSpy can also compute this distance based on the size of an object in the image. Before proceeding, re-open the example project to reset any changes you may have made.

Camera matching, or camera calibration, is the process of estimating camera parameters from certain features in an image. fSpy computes the approximate focal length, orientation and …