Originally Posted by RapalloAV
I wonder how we would always get an accurate result "top & bottom"?
As you know not all scope films have exactly the same height, there are a number of different ratios within the SCOPE perimeter.
They will always have the same width, but if you test a number of scope films and mark the postion of the grey bars on the screen with tape, no two films hardly ever match up to the same marks
I do constant height by zooming and without masking, and you have a few options for an extra wide film (e.g. 2.4:1):
- Live with very narrow black bars top and bottom.
- Zoom the projector a little extra to fill the screen, and lose a tiny bit of the image at the sides (absorbed by the black surround).
- Overscan the projector digitally a little to fill the screen. You still lose a bit at the edges but no light spills over (but picture quality could suffer slightly).
Lens shift takes care of centering the image of course. If your main reason for doing constant height was to fill the screen, then 1) is irritating. I usually do 2) or 3). Multiple screens or motorized masking obviously could be better solutions, but I wanted a simple (and cheap) setup.
This feature of the AE3000 is interesting, but I doubt it will encourage many to try a 2.35:1 screen if they don't already have one. It involves too much messing around for most people.