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Discussion Starter #1
The next generation of HD90 and HD91 LED projector has been announced by Optoma.




The brightness has been increased (1200 and 1500 lumens)

OPTOMA HD93 :

Resolution/ 1920×1080 (native on 1080i/p)
Brightness (typical)/ 1,200 Lumens
Contrast Ratio/ 600,000 :1
(MAX/ with Dynamic Black


OPTOMA HD92 :

Resolution/ 1920×1080 (native on 1080i/p)
Brightness (typical)/ 1,500 Lumens
Contrast Ratio/ 600,000 :1
(MAX/ with Dynamic Black)


The main difference between these two projectors is the Optical Engine (short throw for the HD92 and classical throw ratio for the HD93) :

http://www.projection-homecinema.fr...92-et-93-hd-nouveaux-projecteurs-1080p-à-led/

http://www.projection-homecinema.fr/2015/04/13/optoma-hd92-et-hd93-dlp-1080p-a-led/


google translation :

https://translate.google.fr/transla...eaux-projecteurs-1080p-%C3%A0-led/&edit-text=
https://translate.google.fr/transla...toma-hd92-et-hd93-dlp-1080p-a-led/&edit-text=
 

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I hope Optoma learned their lesson with the HD90 and HD91. These units need to see a substantial bump in brightness (at least 300 calibrated lumens more), with MUCH better native contrast (at least 2000:1) and a good dynamic contrast implementation (to get around 10000:1 dynamically). If they can fix these three things I think this projector could be a winner for Optoma.
 

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Discussion Starter #4
I hope Optoma learned their lesson with the HD90 and HD91. These units need to see a substantial bump in brightness (at least 300 calibrated lumens more), with MUCH better native contrast (at least 2000:1) and a good dynamic contrast implementation (to get around 10000:1 dynamically). If they can fix these three things I think this projector could be a winner for Optoma.
I totally agree, the HD91 was a mess mainly because of the lack of brightness.
 

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I just hope they fixed those picture performance deficiencies which plagued the HD 90 and 91.

Is there already an estimate when those new Optoma models are supposed to become available?
 

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Possibly includes pixelworks' latest True Clarity technology.

Would be interesting to learn whether Pure Motion judder reduction will finally handle program content equally shot with a film (24 fps) or with a video camera (60 and 50 Hz).

IIRC, for 60Hz territories you could equally apply Pure Motion for film oder video recorded content (e.g. Optoma HD 8300). Unfortunately, in PAL territories (e.g. Optoma HD 83), Pure Motion was only available for program content shot on film (playback via 60 Hz Blu-ray or 50 Hz DVD and TV). :(
 

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We'll have to see:

Dynamic Black IV Generation
Dynamic Black IV smoothly adjusts the lamp output automatically, based on the brightness information of each frame; to create a stunning contrast ratio. Bright scenes are crisp and clear, while dark scenes remain detailed with deep blacks which gives exceptional light and shade detail.
 

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I hope Optoma learned their lesson with the HD90 and HD91. These units need to see a substantial bump in brightness (at least 300 calibrated lumens more), with MUCH better native contrast (at least 2000:1) and a good dynamic contrast implementation (to get around 10000:1 dynamically). If they can fix these three things I think this projector could be a winner for Optoma.
I gave up on Optoma years ago. Sony and JVC projectors are so far ahead price / performance wise, they wipe the floor with Optoma projectors.
 

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So how is the Vivitek review comming along:)

I am happy to see Optoma improving the light output but I was hoping for 1500 calibrated lumens on the standard lens. I will be needing something that can light-up a 150 to 160 inch 1-gain screen so it appears I will need to keep looking.

The next press release that I am interested in, is for the Benq W7500 replacement.
 

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So how is the Vivitek review comming along:)

I am happy to see Optoma improving the light output but I was hoping for 1500 calibrated lumens on the standard lens. I will be needing something that can light-up a 150 to 160 inch 1-gain screen so it appears I will need to keep looking.

The next press release that I am interested in, is for the Benq W7500 replacement.
Which Vivitek model are you referring to? The Optoma was not even half of the rate you were expecting. I think it's going to be a number of years before we see high lumen output LEDs. Maybe by 2020 we'll have something of the sort. Even if we doubled the LEDs in the light engine (2 LEDs for each color), we'd only be getting a little bit more than 1000 lumens.
 

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Which Vivitek model are you referring to? The Optoma was not even half of the rate you were expecting. I think it's going to be a number of years before we see high lumen output LEDs. Maybe by 2020 we'll have something of the sort. Even if we doubled the LEDs in the light engine (2 LEDs for each color), we'd only be getting a little bit more than 1000 lumens.
I was taking a friendly swipe at Kraine regarding the Vivitek, see post below. After digesting all the information available here at AVS I have already come to the conclusion that the only economical solution for a high lumen projector for the next few years will be lamp based. I have an interest in DLP and scour the forums every day for any press release & reviews that I can find. Hopefully when I am ready to pull the triger I can have some feedback from you regarding my shortlist.


Just a Quick info about the H1188HD, we have a game going on here to win a brand new H1188HD ....................................................................(link deleted).



You just have to answer at the 2 following questions :

1) color temp measuremts on future pjhc.fr review about the H1188HD
2) gamma mesurements
 

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I suspect that LEDs in front projectors have seen their day. Laser is here and it can produce much more calibrated lumens than LED. The transition to laser has begun and without some technological improvements (much higher lumens) to LED it's my opinion it'll fade away over the next few years.
 

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you're probably right for the full size models. I think the LED's will stay for a while in the PICO models. The under 1K portable LG PF1500 can crank out more calibrated lumens than the HD91 did. Optoma is going to have surpass this in this upcoming model, especially if it sells at the same price point as the HD91.
 

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A big negative for LEDs is the very high current (but low voltage) power supply need. Expensive and impedances need to be kept very low. A blue laser/pump power supply is a piece of cake.
 

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The Epson LS10000 in high power mode draws 459 watts. But the power to the light wheel is not high current. Its probably very low with the exciting voltage being reasonably high. A much less robust power supply is needed even if the drawn watts for each of the projectors is around the same.
 

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I'm not an electrical engineer or anything close to it (and it surprises me that I actually know how to extrapolate wattage if the voltage and amperage is known), but considering the voltage to the LEDs is low does that still necessitate a robust power supply or does the high amperage make things more tricky? Please forgive my ignorance if this train of thought is totally wrong.
 
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