Simple Camera Match is a lightweight Blender add-on for camera reconstruction and perspective matching. You draw X, Y, and Z vanishing lines directly in the camera viewport over a background image, and the add-on solves the camera's focal length, location, and rotation automatically in real time.
The entire process happens in the camera viewport's 2D space with real-time visual feedback. A horizon constraint lets you drag horizon handles to fine-tune the camera's pitch. Keyboard shortcuts switch between axes: press 1 for the X axis (red) and 2 for the Y axis (green). Hover over a line's endpoint and press X to delete it, or press Esc or right-click to exit drawing mode at any time.
Drawing operations use their own independent undo/redo stack, kept separate from Blender's global undo tree. Simple Camera Match is released under the GNU General Public License v3.0 or later, runs on Blender 4.2 LTS and newer, and ships with builds for Windows, macOS, and Linux.