TMcG, and all other anamorphic lovers
I knew I was gonna ignite some debate when I dropped the anamorpic lens issue, but here is what I believe. The blurays correct real image is around 1920*800 .You are wrong in every other way.
The horizontal resolution is 1920 what you mean to say is vertical resolution which is 1080.
In order to get full panel usage on the projector that 'vertical ' stretch is in fact adding artificial
pixels and this distorts
the original image by taking away detail even though you end up with more pixels.
More pixels in this case do not mean more resolution because the pixels are calculated by some complex algorithm and hence have no real quality to them. Experts agree that you lose as much as half the detail when doing a vertical stretch and then anamorphing it. I have seen anamorphic image and the real zoomed out image side by side and the detail rendering is very evident in the anamorphed image.
Its like I have 10 apples and 20 people to eat them, but hey if I add a little sugar to it and mix it with these 10 apples then I can give to 20 people . But are 20 people getting the full real pleasure of the 10 apples. Here more to read.
As to curved or not curved screen. Curved will give the most accurate reproduction in that the projected light is all travelling a similar distance to avoid the pin cushion. Personally in a home cinema you can tell it that much and the choice of screen is more of apersonal taste. Personally I prefer flat.
TMcG more for you to read: