DLP Color Wheel Speed With XPR Pixel Shifting
Originally Posted by THXfreak
Very interesting read! And a WIDE field of Information to cover and understand...
BenQ Support here in Germany wrote me in an Email the following Color Wheel Speeds for the W1700 (HT2550):
2D: 24HZ 5X; 50Hz 2X; 60Hz, 2X
3D: 100Hz 120Hz
So does this mean in terms of RBE the 2D 24hz is "only" 240hz (24x5 = 120 x 2 (RGBRGB wheel) =240hz??
On the other hand I´ve seen a couple of Videoclips where People made some Captures of Gaming and/or Movies where I could see on an Benq W2000 (HT3050))with 6x RGBRGB Color wheel some Rainbow artifacts and on an TK 800 I could see not one - even the TK 800 has NOT an RGBRGB wheel...
I don’t believe that is correct.
First of all, as I pointed out above, those “X” qualifiers can be very misleading as they denote number of RGB passes per frame and not necessarily the speed or frequency of those passes.
The original HT2550 was incapable (like most every 4K DLP save the new HT3550 and Ht5550) of displaying 24Hz film content natively. The projector would perform a 3:2 pull down and display it at the projector’s native 60Hz. Almost every 4K DLP sold is locked at 60Hz (120Hz color wheel and 240Hz RGBRGB “speed”) because of the pixel shift. The HT3550/HT5550 solves this by physically slowing the rotation of the wheel (and the DMD and the optical actuator) to accommodate playing 24Hz film content.
As for the TK800/TK800M, while they are not technically RGBRGB models they are still “4X” color wheels in that you still get 4 rgb passes per video frame. This all gets quite technical and I’m sure I’m not explaining it well but any .47” quad shift 4K DLP projector uses a variation of “4X” color wheel— you wouldn’t see anymore RBE in the TK800 than you would on an HT3550, for example.
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Last edited by sage11x; 08-13-2019 at 09:05 AM.