It can effectively reduce reflection on the filter surface and reduce ghosting and other problems. 

Yes, the bottom of the tripod adopts a non-slip pad design, which can increase the friction with the ground, improve the stability of the tripod and prevent it from sliding during shooting. 

Please maintain the search coil parallel to the ground and move it at a steady, consistent speed for optimal detection accuracy. 

It HAS an Auto Focus button. Works great! As for the Anti-vibration/shake, NO, not that I can see. However, a hand stabilizer handle should help with that. I haven't notice any vibrations although I'm still experimenting. Beautiful video! FYI,Can't find an external monitor that works with this camera. Purchased two different monitors and five different HDMI Cables, No luck. But the flip out built-in is fine. Good quality, I just wanted something larger. 

Hello! The camera has electronic anti-shake function, but it is not waterproof.