Download fSpy (available for Win/Mac/Linux). Load your reference image. Align the colored lines (Red=X, Green=Y, Blue=Z) with real-world geometry in your photo. For example, align the Blue line with a vertical door frame. Within 60 seconds, fSpy will calculate the exact focal length and camera rotation.
fSpy is a free, open-source camera matching tool that extracts camera parameters and lens distortion from a photograph so you can recreate the same camera in a 3D application.
Download fSpy (available for Win/Mac/Linux). Load your reference image. Align the colored lines (Red=X, Green=Y, Blue=Z) with real-world geometry in your photo. For example, align the Blue line with a vertical door frame. Within 60 seconds, fSpy will calculate the exact focal length and camera rotation.
fSpy is a free, open-source camera matching tool that extracts camera parameters and lens distortion from a photograph so you can recreate the same camera in a 3D application. fspy 3ds max top