Don’t forget that it’s a manual lens adapter. Works with full manual lenses. If your lens has no physical aperture ring, you cannot control it from your camera  

Yes, it is indeed Nikon f mount. 

In my opinion, this splash water protection is as good as unnecessary for a well-built lens. When it rains properly, you no longer unpack your splash-proof camera unprotected and even the amateur models can withstand a short shower. 

In free fall, the autofocus would have to follow the "pull" downwards. It should be at least a Nikon 5500 or Nikon 7200. Choose a very short shutter speed, eg 1/1000. Then ran to about 25 cm and go along. Keep the background as dark as possible. Illumination with continuous light at a 90 degree angle, preferably from above 

I actually have not received this adapter yet. It's shipping from China. Don't think that was disclosed in the ad. However, I do not believe this is for the Pentax Q body rather for digital and film cameras that take the Pentax K mount in its many variations. So I'm expecting to be able to mount my Leica M mount lenses on my digital and film Pentax K mount cameras, no autofocus or relay of exposure information, only to be used with manual focus and exposure.