Posted February 18 2005 - 11:04 AM
Actually there is a true 2.35:1 'jury-rig' option available for 16x9 projection sets. I haven't tried it myself, but it makes sense and does provide constant height for standard 1.33:1, HDTV 1.78:1, and Scope 2.35:1 features. It has been tried by others, who often give it glowing results if you want to go through the expense and trouble.
Here's how it works-
For standard 1.33:1 features, set your projector to 4x3 (normal set-up).
For 1.78:1 and 1.85:1 16x9 enhanced features, set your projector for 16x9 (again normal set-up).
For 16x9 enhanced scope (2.35:1 aspect ratio) features, one would set their 16x9 projector to the letterboxed mode. This would crop most of the unused black bars of the still squeezed scope image, but does not crop the sides. Then, by using an add-on 16x9 anamorphic lens, the still squeezed image is unsqueezed to a full 2.35:1 image. This somewhat expensive option (the cost of the 16x9 anamorphic lens attachment) has it's advantages over the variable zoom approach. The scope image uses all of the DMD, LCD, or Plasma's pixels vs them reproducing black bars, and also should provide more light to the resulting outputted image for the same reasons.
Constant height is also maintained, although 1.85:1 features (shown in the normal fashion) may have a tad of black at the top and bottom. A few of the in-between or modified aspect ratios (like the 1.95:1 Apocalypse Now, or the 2.20:1 70mm features) would need to be shown in the normal fashion as well, again resulting in the minor black bars. How minor would depend on the given aspect ratio.