There's an expensive app that lets you shoot in "4K" (note the quotes) on an iPhone. I don't recall what iPhone models will work or what operating system versions are required, but what the app does is shoot a series of still photos in rapid succession. I haven't heard much about it, but I do remember it cost more than I was willing to spend to be able to shoot on an iPhone. (Send the darts and arrows my way now, but I think there are only two reasons to shoot on an iPhone - lack of budget or gimmick quotient in the hopes of garnering press interest.)
I've discovered a few other things about this that need some work.
1. It seems that walls can't be scaled to new sizes. I can butt two wall pieces together to make longer walls, but if I need something shorter than a single piece, it doesn't look like it's possible.
2. The walls and buildings have depth, and if they're rotated 180 degree-ish away from the camera the photo-based texture maps disappear, so all you get is an outline.
3. There doesn't seem to be any way to specify dimensions for anything - walls, buildings, roads, props. You can sort of specify location numerically, but only by finger-dragging. It would be nice to have the ability to type in numbers.
4. As I mentioned before, the documentation is lacking and apparently still a work-in-progress.
This has a lot of potential but I think it'll gain a lot of value once it hits Version 2.
Just a quick update after an hour or so of use. It's pretty good although I'm still using it on an iPhone. I really haven't spotted any glaring problems, but right now all the documentation seems to be on the company's website, and what's there seems to be incomplete and sparse. Hopefully they'll flesh it out a bit.
One thing I'd like to see (probably others I haven't found yet) is the ability to specify sensor size and aperture to get a more accurate idea of the depth of field. I know that it won't be perfect, but it would get the pre-viz a bit closer, and for me, more useful.
The number one thing needed though is better documentation.
I just bought it for my iPhone 6 (not the Plus), and it looks pretty good. I would suggest that if you're going to be doing a lot of work with you you use it on an iPad since the controls get pretty small on a phone, but it's still usable. Now I have an excuse to finally join the 21st Century and buy an iPad.
A polarizing filter could be a problem depending on the construction of the window. Invisible or semi-visible stress patterns in plastic or glass could be enhanced by the filter, as the stresses polarize the light.
Almost 10 feet diagonal and 8K, is that all?