OK, now that I’ve installed it here’s the real answers for size of the hole you need to drill through your walls to install the 8MPix cameras. I don’t know for sure but I would expect the cables, and water proof socket enclosures are the same with the other cameras too.
If you cut the Ethernet plug off the cable the cable is almost exactly 3/16" in size. Depending upon the material you’re drilling through you might get away with drilling just a 3/16 hole. I was drilling through stucco with a wire mesh backing and I couldn’t get the cable through the hole, plus it would have been super tight and would have made it very difficult to thread the cable back and forth through the hole. Ultimately I drilled a 1/4" hole and the cable (without plug) slips through easily. I then used an Ethernet crimping tool to put the plug on outside the house.
I chose to install a junction box on the outside of the wall, the best option I found was from Lowes they have a metal junction box extension, so it’s missing the back, I also bought the top plate and used a hole saw to drill a 1" hole in the middle of the front plate for the camera’s cable.
Obviously the junction box itself is not waterproof, but that’s not my goal, this was just a way to put the cables on the outside of the house inside a tidy box and have a easy way to mount the camera to the box. The only thing I need to waterproof is the 1/4" hole with the cable, this is pretty easy with general sealer,
The alternative to avoid cables on the outside is to drill a hole big enough to pass through the water proof cable enclosure. I measured that as 25/32" I think if you drilled 13/16" you’d probably be able to push it through pretty easily. However, this is a fairly big hole for sealing up and I didn’t fancy that option.
With respect to the camera’s bend angle, you can spin it around the axis 360 degrees, even after mounting to the wall. You can also bend it at the ball joint from pointing straight out to just slightly more than 90 degrees to the side, but it’s only a little more than 90. At a guess I’d say perhaps 93-96 degrees, i.e. very so slightly pointing towards the wall it’s mounted on.
Hope that’s helpful for some others.