More newbie questions, after a lot of further online reading.
1) Projector distance from the screen – if our room allows the projector to be placed within the min / max distances required for the screen size (180” diagonal, 166" wide 1:2.35 screen) – should this projector be placed in the middle of these distances or closer to either end? What are the benefits or drawbacks of having the projector closer to the minimum throw distance for the intended screen size (which for room aesthetic reasons, is where my wife would prefer we hang it)? If I understand correctly, so long it can fill the 180" 1:2.35 screen using zoom - there should be no problem to 'zoom out' from that distance for a 16:9 image on that screen (with masking dropping on the sides)? I guess these are actually two questions rolled in one.
2) I see this projector's native format is 1.9:1 (17:9) format. What’s the impact of this, if at all, on a constant image height screen? Our plan is to install a 1:2.35 screen with vertical masking (for 16:9 content) and use lens memory (and not an anamorphic lens) to zoom 1:2.35 content on it, and zoom back out for 16:9 content + drop down vertical masking. Can you please explain what bearing does this 17:9 native aspect ratio of this projector have, if at all, on our plans on screen aspect ratio / masking solution? Any drawbacks with our approach for native 4K content? Does the 17:9 native aspect ratio of this screen provide any additional benefits or drawbacks I should take into account?