Pro Tip: Use long edges for better accuracy. Short lines lead to "wobbly" camera solves.
fSpy is a standalone camera matching software that calculates the position, orientation, and focal length of a camera based on vanishing points in a still image. fspy 3ds max top
Using fSpy for 3ds Max is a game-changer for anyone doing "photo-matching" or "set extensions." It removes the guesswork and provides a rock-solid foundation for your 3D assets to live within a 2D plate. Pro Tip: Use long edges for better accuracy