Panasonic's menus are similar to previous models. Overall a very reasonable layout. Some might prefer larger type, which might mean more sub-menus. Watch out for one or two menus which require scrolling down to get to the last couple of items.
Panasonic PT-AR100U Lens Throw
Panasonic's 2:1 zoom ratio is the same wide ratio found on the PT-AE7000, as well as the older PT-AX series. This gives you great range as to where you can place the projector, relative to distance to the screen.
For filling a 100 inch diagonal, 16:9 aspect ratio screen, the projector - measured from the front of the lens to the screen - can be as close as 9.8 feet or as far back as 19.6 feet. You can calculate distances for other screen sizes by starting with those numbers.
Note: With 2:1 zoom lenses, we expect to see a significant loss of brightness going from the closest placement position (wide-angle) to the furthest (telephoto). In the case of the PT-AR100U, the drop in lumens is a bit more than with other projectors. This Panasonic projector lost just over 50% of its brightness. A 40% drop is more typical, and some have even less. Keep this in mind if you want to place the PT-AR100U on a rear shelf, where it's not at its brightest.
There's also a silver lining in that. While projecting to a larger screen means less brightness overall, if rear shelf mounting, choosing a larger screen means less the less telephoto the zoom lens, and therefore the brighter the projector is. Keep that all in mind as you make your decision on screen size, and projector placement!
Anamorphic Lens - Wide Screen
Panasonic reserves support for an anamorphic lens for their higher end PT-AE7000 projector. That projector also has Lens Memory as an alternative. This PT-AR100U though, is your basic family room, living room, projector. Panasonic likely figures that people buying this projector will be watching a mix of movies and other content. And, it really doesn't make much sense to spend more for an anamorphic lens, than for your projector.