Kaleidoscope filters do not directly affect the aperture and shutter speed of the camera 

Yes, you can attach the phone lens to the main phone camera of iPhone 13. 

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. 

Dear customer: This construction time-lapse camera is a waterproof and dustproof integrated design, and the rating is IP66, so you don't need to protect items such as cases. Hope our answer is helpful to you. 

The part for that use is extendable so can fit most phones but this part of the monocular is absolute rubbish. It scratches the phone and just doesn't work for that purpose at all. The actual monocular is very good though if you want to use it normally.