Originally Posted by gsr
Understood, but simply switching to 240hz won't help matters here. The issue here is the video processor they're using, not the DLP technology as witnessed by DLP front projectors that handle 24hz signals just fine. But your statement that "120 hz is not a multiple of 24" is incorrect and there are displays out there that do 5:5 with 24hz content. There's no reason why Mitsubishi couldn't upgrade their video processing to resolve this, though I suspect it would require hardware changes, so we shouldn't expect to see this changed with a firmware update.
In a hurry I shortcutted my answer. What I meant to say is that unlike whole multiples of 24...e.g. 48, 96, etc....that 120 hz in the case of Mits DLPs is not 5:5, nor 5 x 24. It is 120 as a multiple of 60 (3:2), not a whole multiple of 24.
If you went to the source article I posted it is mentioned that it some 120 hz displays can do true 5:5...but the Mits does not.
Of course Mits could design it as 5:5...but they did not. The whole point was to see what might contribute to the judder and other motion artifacts, and I'll say it again...3:2 (or 6:4) doesn't help.
Active shutter 3D would benefit not only from 5:5, but also from a higher rate...like 240 hz (@ 5:5). The higher rate the better for 3D, based on what I have read.
There are some designs for passive 3D that might overcome the drop in resolution, as picture brightness is another factor that contributes to a satisfying 3D experience.
Nowadays, most HDTV vendors sell LCD televisions in NTSC/ATSC countries capable of 120 Hz or 240 Hz refresh rates and plasma sets capable of 48, 72, or 96 Hz refresh. When combined with a 1080p24-capable source (such as most Blu-ray Disc players), some of these sets are able to display film-based content using a pulldown scheme of whole multiples of 24, thereby avoiding the problems associated with 2:3 pulldown or the 4% speed-up used in PAL countries. For example, a 1080p 120 Hz set which accepts a 1080p24 input can achieve 5:5 pulldown by simply repeating each frame five times and thus not exhibit picture artifacts associated with telecine judder.