Smart Auto Focus is an addon that calculates camera focus distance dynamically based on visible geometry rather than object origins. It uses ray casting to determine the exact distance from the camera to the surface it is pointing at, providing accurate depth of field even with shallow focus or close-up shots.

The tool includes controls to adjust focus reaction speed, such as smooth focus transitions and a switch delay to prevent focus popping or micro-jitter when the camera crosses object edges. Users can leave the autofocus running dynamically during playback or bake the calculated focus distances into standard keyframes for final rendering and animation export. It integrates seamlessly with the active camera's existing Depth of Field settings without requiring empty objects or complex scene setups.