The Panasonic PT7600 was on display at the CEDIA Expo. It looked quite good despite being shown on a large screen (~15 feet wide?) with a ton of ambient light. For smaller screens, however, I would go for a single chip DLP (if you are not bothered by the colour separation artifacts) or a JVC DILA. The most impressive thing about this projector was that it represents a significant price and size reduction for 3 chip DLP projectors. If this trend accelerates, maybe we will have 3 chip DLPs available for under 15K within a couple of years.
Originally posted by CINERAMAX Here is the spec sheet, boy oh boy finally we have been delivered from Rainbows and limited color gamut.
hold the boat. I can see rainbows on the three chip units. Likely others can too. It is harder to see than one chip units, but it IS there for some. I'm not the only one to report seeing this artifact on 3 chip units.
To be fair I can also see rainows on CRTs. D-ILA so far is the only projectors I have never seen the rainbow artifact.
I recognize how the persistence of image theory works with CRT and the phosfers but I still clueless about 3 chippers. I'm not concerned though because LCoS is likely my future.
If you see rainbows on 3-chip DLPs and CRT FPTVs my suggestion is to cut back on your medication dosage. ;D
People rarely mention that LCD and LCOS/D-ILA FPTVs are "3-chip" models as well, with comparable resolution capability.
The only advantages for DLP is better pixel gap than LCD, and better contrast out of the box than LCD or D-ILA. But this is often fixed with calibration for D-ILA FPTVs, so I can't see the extra cost justification.
Especially with the newest generation of high contrast projectors coming out, and 1000:1 contrast, 1080p native, LCOS FPTVs due out next year.
Simply because the mirrors are refelective while DILA is transmissive (ie> it is extremely expensive to make the transmission effect "Transparent").
That makes 3 chip dlp the most honest in color throughout.Ask any 3 chip dlp addict that. 3 chip can therefore recreate reality like a sunset in tahiti, with much more effectively than even film can. For the film buff maybe DILA is ok. But we try to recreate reality first, as the films will be taken care of as well.
It seems to me that what DLP has going for it is linearity. Since DLP uses PWM to control light intensity, it is a very linear device. You want IRE 45, you got it---just dial in a 45% duty cycle for the mirrors. That probably makes it easier to keep the color tracking well-calibrated. Of course the potential disadvantage is the temporal noise that PWM introduces, but with a 3-chip that should be only 1/3 as much noise as a 1-chip.
On the other hand, I imagine that DILA is probably a bit more nonlinear, and requires clean, precise electronics to dial in the desired intensities.
DILA is definitely reflective. If I recall, the backside light used to draw the reflected image is abosrbed in a blocking layer so that vitually all of the light that arrives on the screen is from the reflected frontside surface. DILA should offer just as good color rendition as DLP.
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