Originally Posted by Casey_Bryson
What is the fix then? JVC has figured out the light leek fix which seems simple, but surely isn't since no other manufacturer has figured it out. Also what native contrast do you think is possible with a DLP chip? I've seen upwards of 2500:1 for some of the Xiaomi's which to my eyes is pretty much on par with what I see at an IMAX/BigDDD (Christie triple flash projector)/AMC Prime theater, but on a smaller scale obviously.
Theres a dual dmd design, look up the Christie Eclipse, also I think the Zeiss Velvet? And a Barco that can do up to 30k. All with some new patented or proprietary modulation, and all 6figures. a really optimized light path, lens, and a larger dmd can get up to 6k:1 with a 20-30k dynamic contrast like the sim2 lumis or hdr duo. They can do that contrast with high light output(2-3k lumens?) as well, those are also very expensive 3chip projectors one using dual lamp with lamp dimming+mechanical iris and the other an insanely tweaked 2 unit stack.
its just the nature of the modulator though it doesnt block light it reflects it away from the lens. But its extremely fast as it switches by electrostatic charge which results in zero motion blur and overshooting(even oled has issues with overshooting?), high mtf(light level aside), and improved dimensionality of video rendering(low apl contrast aside), ansi contrast(haloing) is a bit better than lcos but still nothing like backlit lcd or oled, but dlp contrast does behave more like a tv than liquid crystal does(think jvcs 200k:1 0.1% apl performance vs 3000:1 at 4% apl whereas a dlps native contrast is very similar to its 4% apl performance). Its really not so simple to achieve these high contrast levels with digital projectors and has taken 30 years to catch up with analog. Even though CRT had very high native contrast, it had very low ansi contrast which resulted in haloing with credits and similar material. And the lcos projectors still need a dynamic iris with gamma modulation to achieve a black level closer to crt and oled, i.e. 20-50k:1 native still leaves a glow, though not pure black aside, that onscreen contrast is superb looking.
7minutes for the microscope.
More affordably the .95dmd uhp models from runco, samsung, planar, etc. could do 3-4k:1 at around 800 lumens? with a 10kish dynamic contrast(mechanical iris).
The Delta/Chi Lin .95 rgb led projectors could do 190% ntsc, had 2-3.5k native contrast, 10-20k dynamic contrast, but only 400-800 lumens. Really amazing color performance on these(at rec709), low level color detail, color contrast. I have a q750i and was watching From Hell last night and the projector did very well, 90% of the movie is 1% apl(projector used a cool 125w through the whole movie lol) and the low level color detail and shadow detail was really great. not 200k:1 jvc blacks but the rest of the image is excellent and the 20k dynamic contrast is similar looking to my jvc rs45s native 20k, while that model cant come close to color performance. Also watched lotr/hobbit recently and the subtle shading and all the natural earth tones were really perfect looking.
Rgb solid state single chip dlp is a cool imaging system... extremely fast refresh due to the nature of the sequential color and dmd switching. Something like 8-900hz color frequency per led o.O +the dmd doesnt get shut off between colors like with a wheel. Though it takes an insanely high quality lens($3k minimum) to be free of chromatic abberation due to the narrowband wavelengths. Have they shown CA in any of these rgb laser ust projectors?
There were also rgb laser dlp rptvs 10 years ago though i dont know what contrast was like. Mitsubishi Laservue