This is an 8.5ft-wide flat-white painted screen using an LG pa75u projector at about 12ft throw (around 1.4:1 throw-ratio).
The room is mostly dark-colored and while the ceiling light is on, it has a sheild that helps keep the most intense light off the screen.
The samples are centered left/right and the pictures are taken from the height where the sample is giving maximum brightness.
While the on-axis shots where taken from about 1:1 seating-distance:screen-width, the off-axis shots where taken from almost 1.2:1 seating-distance:screen-width ratio.
Starting with a reference point, this is Carls Flexi-White, on-axis from about 8.5ft back..note it has been measured previously at slightly above 1.0gain, I believe.
Here is the same centered Carls Flexi-White sample from about 10ft-back, even with the screen's edge (about 23degrees off-axis)...Note how it has dimmed slightly in relation to the white background screen:
Carl's ALR material is likewise able to reach slightly above 1.0gain on-axis:
This is the kind of dimming you might expect for those seated beside (left/right of) a center position. This is about 2.3ft off-center and about 10ft-back:
And here is Carl's ALR from a position in-line with the screen's edge and about 10ft-back (roughly 23degrees off-axis) similar to where a 4'th and 5'th seat position might be..two seats away from the center seat:
This is Carl's ALR from the 8.5ft-back on-axis position with an 800lumen lamp positioned 4ft right of the screen's center, about 2ft down and 2ft back: