Optoma GT1080 vs BenQ W1080ST and W1085ST
The W1080 offers a 5-6x color wheel (the same as the W1070). Since rainbow visibility is inversely proportional to wheel speed (ie, higher speed yields less RBE), the W1080 has a significant advantage here over the GT1080's much-slower 2-3x wheel.
As for contrast: manufacturer-supplied contrast ratios are unregulated and thus usually severely inflated. Both projectors offer in the ballpark of 1500:1 contrast ratio in real-world measurements. A far cry from either manufacturer's claim.
As for brightness: the W1080 is brighter in its more color-accurate modes; whereas the GT1080 should be brighter in its less color-accurate modes (once again, due to the color wheel). Technically, that means the W1080 has a color-brightness advantage.
As for black levels: the GT1080 has an advantage. Neither is amazing in this department, though.
As for 3D: VESA 3D is superior because it doesn't rob the image of as much contrast when compared to DLP-Link. VESA requires the separate purchase of an emitter.
However, in 3D, both projectors offer the same triple-flash (144hz) sync-rate; which means eye fatigue in 3D compared to 2D (when played from a 24hz source, such as a bluray) should be reasonably low for both projectors.
That said, viewing 3D on an active display such as these projectors (and arguably even on passive displays) is always much more fatiguing than watching 2D.
As for eye strain in general: the W1080 has an advantage since faster color wheels produce less visible color break-up on high-contrast scenes, which makes viewing less fatiguing on the eyes to those who suffer from eye strain/RBE-sensitivity.
All in all, then, moving from your W1080 to a GT1080 wouldn't really be an upgrade.
If you're battling with eye strain, you might try dimming your projector (ECO mode - and/or turning BrilliantColor to 'off'); or viewing it in some ambient light. If you're running a large screen (and/or sitting close), you might also find you experience less fatigue if you drop the size a bit (since your eyes have to do less darting around the screen when it's smaller).
BenQ HT2050A Projector; Kodi (on Ubuntu, OpenELEC & S802) via Sony STR-DH540 AVR with Boston Acoustics SoundWare XS SE 5.1 Audio + Jamo 210 Sub. Emby for Mobile Streaming.
Last edited by kreeturez; 12-17-2014 at 01:58 PM.