Well, mounting this projector on the ceiling was quite a challenge. The Sharp XV-Z18000 has only electronic
tilt and shift (plus an assortment of vertical and horizontal keystone as well as spherical and trapezoidal distortion correction) - no lens shift. So if you want to use every pixel of the 1920x1080 panel you have to mount the projector and the screen in a way that you don't need any of those corrections
With the Sony I just put the projector in a good place perpendicular to the screen and used the hor/ver lens-shift to get the image exactly where I wanted it.
There's also the disadvantage of a very limited 1.15x zoom lens
which doesn't give you much flexibility when choosing the best place of the projector relative to the screen.
Fortunately my old mounting position of the Sony was ideal for mounting the Sharp, I only had to switch from a 3 point mount to a 4 point mount with different distances and fiddle around with getting the projector aligned in parallel to the ceiling. As I don't use a mounting plate but only hooks and screws it took me a while to get that part right. But finally I had a near perfect match between the projected image and the screen
To award myself for this effort I pulled out our "Best of New Zealand" collection, cropped for 16:9 (or 5:4 for portrait oriented images) and off we went to test the qualities of the projector with still images.
More on this in a follow-up post...
Btw.: some information on the smaller brother Z15000 can be found here