Originally Posted by Vincent Jenkins
The seats will be around the same distance as the projector (15'). The fan sits around 13' - 13.5' away from the wall and is slightly to the side from where the pj would sit. I don't want to change all the colors of the walls in the room. I am willing to paint one as an accent wall, but it would look really awkward to have all walls be covered or a different color than the rest of the house. It's a multifunction space and I would like to keep that. When you say a screen size are you talking aspect ratio? I know I want a 120" screen or larger. If I can't get that then I would rather just buy a decent 85" tv. I won't be using the room to view during the day. The earliest I would probably start would be around 4pm. I really wish I could see an example of these projectors in my type of conditions. I'm curious how badly it is affected. If it's so light and off on the colors that it looks sort of like a newspaper then I'm not even interested in a projector. Difficulty is there are no show rooms around me that I know of that let me get this experience in my area. Thanks again for the help!
Not aspect ratio, screen size.
While this is subject to personal preference, the general ratio to screen size is 10-12" in diagonal for every foot in distance. For 15' that would be between 150" and 180".
You could get an 180" 2.35/39/40:1 screen. The 5050UB has motorized lenses, so a memory setting would be zoomed in for a 2.35:1 movie where the black top and bottom bars would land outside the screen, and when it came time for a 16:9 video format, another memory setting where the projector would zoom out so the 16:9 image would fit on the 2.35:1 screen. The black bars would be on the left and right.
This setup is called Constant Image Height, CIH.
The facebook video illustrates what happens to black level in the presence of white walls. ALR screens can help, but they require the projector to be placed further back, around ~1.9x throw (width of the screen). For an 150" screen that would mean ~19'. Some also have a narrower viewing cone, for instance a screen with a viewing cone of 90 degrees means when viewing it from 45 degrees the image is half as bright compared to viewing the screen on it's central axis.
Paint mixes have been used for larger screens, and are budget friendly. Can be applied on a smooth wall or on a white PVC screen. Create a new thread here if you want to go this way:
Paint mixes are customizable and can help with the negative effects of the white walls.
LE: they also will not require the long throw of some ALR screens.
In regards to positioning, although this projector has lens shift to get around the fan, check the manual on how what the limits are.