While the camera system is nominally the same on Mini 3 Pro and Mini 4 Pro, the latter takes appreciably better photos and videos. Here's why.
DJI MINI 4 PRO - DO THIS STRAIGHT AWAY!
DJI Mini 4 Pro vs DJI Mini 3 Pro: Which one is right for you?
DJI MINI 3 PRO VS MINI 4 PRO: Video Samples Comparison -How Much Better Is The MINI 4 PRO????
DJI MINI 3 PRO VS MINI 4 PRO: Video Samples Comparison -How Much Better Is The MINI 4 PRO???? : r/dji
8 ways DJI Mini 4 Pro camera beats Mini 3 Pro
Open Box DJI Mini 3 (DJI RC) - Lightweight and Foldable Mini Camera Drone with 4K HDR Video, 38-min Flight Time, True Vertical Shooting, and Intelligent Features
DJI Mini 4 Pro Fly More Combo Plus (DJI RC 2)
DJI Mini 4 Pro
Mini 4 Pro Battery Charger for DJI Mini 4 Pro/Mini 3 Pro Accessories,DJI Mini 4 Pro/Mini 3 Series Two-Way Charging Hub, Dual Batteries Rapid Charging : Toys & Games
Remarkably Mini The mini-sized, mega-capable DJI Mini 3 Pro is just as powerful as it is portable. Weighing less than 249 g and with upgraded safety features, it's not only regulation-friendly, it's also the safest in its series. With a 1/1.3-inch sensor and top-tier features, it redefines what it means to fly Mini. Packed With Performance Mini 3 Pro sports a completely new look that is optimized to get more out of every flight.
DJI Mini 3 Pro Drone with RC Remote Controller