Panasonic TS4 vs Panasonic TS3
From below specification comparison chart see that both camera has very similar features such as 12.1 megapixels resolution, 4.6x wide-angle optical zoom, 4x digital zoom, video resolution. It also has the same rugged features; 40 feet waterproof and 6.6 feet shockproof. Even the appearance looks the same and indistinguishable. However, Panasonic TS4 has been improved software for better image processing and GPS tracking system.