Originally Posted by rdjam
I've found the color issues more noticeable. But then again, I haven't gotten the "LCD optimized" versions of the Omega lenses yet to make a fair comparison, nor have I had time to run some color compensation tricks with Spectracal yet.
With the DLP filters, I found the colour difference very noticeable, and I had to tweak a significant amount of settings to reach satisfactory results. However I wasn't able to match the colours perfectly, that would have requires a more complex colour correction software. I noticed that uneven light intensity caused eye rivalry much more quickly than incorrect colour.
With the LCD filters, colours were barely improved, but the light intensity is almost matching so the picture creates very little eye rivalry, and when it does it's only on the few colour primaries which have serious issues like RED, Cyan and Magenta. Basically the LCD filters perform 95% of the correction work I had previously struggled to achieve. All I had to do next were minor tweaks with the Hue of individual primaries to make the colour closer. After correction, Cyan and Magenta no longer cause eye rivalry, only pure Red is left.
Originally Posted by nirvy111
What makes dual projector passive 3D better than active shutter glasses 3D? Assuming that both techs are ghost and flicker free with satisfactory image brightness, what's the difference?
First your assumptions are not perfectly met at the moment :
-Only DLP provides a crosstalk free picture with shutter glasses, LCD and LCoS still have work to do.
-Shutter glasses 3D isn't flicker free and NEVER WILL. What it is is pain free.
At 120Hz/144Hz the vast majority of people don't directly see the flicker (it isn't instant strobing pain like at 60Hz), but a large portion of people still feel it and it causes fatigue over time. If I put a DLP shutter system and a passive system side by side, I can instantly feel the difference.
According to cinema experts, watching a 2 hours long movie is fine for most people with current shutter technology, but beyond that the amount of people complaining of problems increases significantly.
-Shutter glasses also rarely offer satisfactory image brightness without having to boost their lamp mode to their maximum output. This causes a significant picture quality difference between the 2D mode and the 3D mode.
Then the other advantages :
-Time sequential based 3D creates motion artefacts (shutter glasses or single-projector RealD/Dolby3D/Omega), in fast motion scenes, because the eyes don't see the pictures at the same time the brain does not estimate the depth properly due to it's own motion compensation (the brain prioritizes what it expects to see significantly more than what the eyes actually see).
3D Motion picture directors know about this and try to avoid too fast motion scenes but they cannot completely avoid it.
-1080p60 : there is still no 1080p 3D consumer projector capable of full resolution at 60Hz input in 3D mode. This may not be important for 3D BluRay (because they're all 24Hz) but it is important if you play games on a powerful PC. Once we'll get proper 1080p60 support, this advantage will be no more, but it appears projector manufacturers aren't interested to make it happen.
-Projector choice : you can choose any projector for dual-projectors 3D, the choice is much more limited with 3D projectors.
This advantage will progressively vanish over time as 3D becomes a standard feature, just like with TVs.