What is the best way to make a photo 3D model?

The best way to make a photo 3D model is photogrammetry—taking overlapping photos of a subject and using software to generate a textured 3D mesh from them. Photogrammetry uses angle-based data to calculate depth (ideal for objects, environments, or people) and works with tools like free Meshroom or paid RealityCapture. For beginners, take 30+ well-lit photos (all sides, top/bottom) and try online tools like Autodesk ReCap to start without complex setup.