Originally Posted by MicroMouse
3d-vision works by using the "generic CRT", but produce too much crosstalk in some games and other games don't work at all. 3d movies look much better with less crosstalk. Is this a driver problem or is the fg2421 impossible to run 3d on ?
The VA panel used in FG2421 doesn't have sufficient ability to do 3D well, however -- with a very minor firmware modification (eliminate the pre-strobe, and only do 120 strobes per second, and shorten the strobe length of the dominant strobe to flash towards the end), it probably could work a lot better.
If the answer to my question is impossible because the pixel response is too slow for 3d, would the following be possible to do ?
Theoretically, the black line insertion is a useful idea as transition back to black is fairly speedy. However, the more major problem is the pre-strobe and the too-long strobe (2.3ms). It's going to still cause major crosstalk problems with the black-line-insertion idea.
For FG2421 to work well with 3D, the pre-strobe needs to be disabled, and the dominant strobe shortenable to about 1 to 1.5ms, towards the end of the current strobe. Even so, VA pixel transitions. See this on FG2421: www.testufo.com/blurtrail
(use full screen mode). Especially look at the bottom edge. The thin line is the pre-strobe and the thick line is the dominant strobe. And the doubled-up thick line is the pixel transitions from previous refresh. For 3D to work well, you should be seeing only one moving vertical line. This isn't noticeable in 2D, but I suspect most (not all) ghosting effects can be mostly fixed by a firmware update to FG2421. Even so, 3D may not be usable enough on the VA panel, however, when this is solved, combined with the black line insertion method (perhaps using a 3rd party utility similar to ToastyX deliner, but running temporally), that probably could make FG2421 do 3D reasonably well. But first things first, the pre-strobe is causing part of your crosstalk problem. Another thing you might be able to do is to adjust the phase of the shutter glasses and have them open-close more quickly, to try and avoid having the pre-strobe be visible. open-close the 3D glasses shutter only during the 2.3ms dominant strobe, rather than the ~0.5ms pre-strobe.
I must stress the FG2421 wasn't designed with 3D in mind (although, technically, it can easily work better than it currently does, with minor tweaks -- but not nearly as crosstalk-free as TN 3D)
Keep tuned for the review. I'm actually now waiting for some additional test equipment, so the review may be delayed a few days more. I don't want to post a "me too" review; as I am testing certain stuff beyond other reviews.
I really like it a lot. Prefer it to my LightBoost. But obviously, this strobe backlight is optimized for 2D operation rather than 3D operation.Edited by mdrejhon - 11/18/13 at 12:49pm