Optoma UHD60 & UHD65 4K/UHD HDR DLP Projectors Now Available - Page 18 - AVS Forum | Home Theater Discussions And Reviews
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post #511 of 2008 Old 06-17-2017, 04:36 PM
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Quote:
Originally Posted by RLBURNSIDE View Post
If anyone wants to do a bit more reading on this:

https://en.wikipedia.org/wiki/Optical_resolution

So a lens' angular resolution depends inversely on the diameter of the lens, which makes sense. But there are other effects to consider, like the lateral resolution, and diffraction.

My original thinking that XPR == 4K optically was considering light only as particles (rays) rather than waves, treating two sets of 4M pixels overlaid in space as being equivalent to in time, and that's obviously (in retrospect) incorrect / incomplete. More pixels side-by-side in space at the same time does have a higher chance of diffraction, than siloed off into distinct times, due to parallel light interacting with itself (wavelike property) making it harder for the lens.
To be clear, is it now your position that if even eShift frames were providing 100 lumens and odd eShift frames were providing another 100 lumens, sending these through the lens at the same time would cause a higher ratio of interactions than each of the 100 lumens on its own? 100 lumens is already a lot of light and so lots of opportunities for issues like diffraction.

If somebody calculated or measured the scatter pattern for the even eShift frames and the scatter pattern for the odd eShift frames, is it your position that they could be added together if the eShift frames go through the lens at different times, but not if they were sent through the lens at the same time?

Thanks,
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post #512 of 2008 Old 06-17-2017, 06:33 PM
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Originally Posted by Ruined View Post
UHD65 will be sharp 4k, JVC a lot more contrast. Depends if you prefer sharpness or contrast.

Also if you can afford 3k may want to look at the Vivitek HK2288 coming out in 2 weeks, will likely perform significantly better than the UHD65.
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Originally Posted by Ruined View Post
It won't definitely outperform the UHD65 but it is $750-$1000 more MSRP and Vivitek's track record is better than Optoma's; not that Optoma's is bad, but Vivitek has put out some really fantastic projectors that Optoma hasn't quite matched. I think that extra cost could go towards better parts like lens quality or dynamic iris quality.
Any idea what the street price is gonna be for the HK2288? If its significantly better then the UHD65, I'll pick it up otherwise I think I'm gonna go for the UHD65.

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Is that from Mike or Craig at AVscience?
Saw it at the AVscience online shop, but I think I am gonna skip the 400U, the input lag on it is apparently too high.
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post #513 of 2008 Old 06-17-2017, 07:19 PM
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Originally Posted by rkabir View Post
Any idea what the street price is gonna be for the HK2288? If its significantly better then the UHD65, I'll pick it up otherwise I think I'm gonna go for the UHD65.
MSRP will be between 3000-3999 is all Vivitek has revealed. Should know more in a week.
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post #514 of 2008 Old 06-17-2017, 09:34 PM
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post #515 of 2008 Old 06-17-2017, 09:38 PM
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How about Vivitek first releases a downloadable user manual like Optoma for the HK2288?

According to the data sheet lens shift is max. 10% (15% UHD 65), UHD 65 can hang further from the screen and, last but not least, features advanced PureMotion frame interpolation.

Fan noise level on the HK 2288 is 35dB in "normal", 25dB in the "eco" mode of the UHD 65. And Vivitek doesn't provide info on uniformity.

At this stage it's like comparing apples and oranges blindfolded.

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post #516 of 2008 Old 06-18-2017, 09:00 AM
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post #517 of 2008 Old 06-18-2017, 03:45 PM
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Quote:
Originally Posted by Pete View Post
Actually that was not my thought pattern. There had been complaints about the direction of the thread and I merely wanted to get one last point across on the subject before discourse moved on. I can see how my choice of words might have given you a negative impression about the size of my ego. Apologies...
No problem at all. I appreciate the numbers you provided and know you meant well. I was just commenting on something I see sometimes that doesn't tend to work out as intended.

--Darin
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post #518 of 2008 Old 06-19-2017, 03:05 AM
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Quote:
Originally Posted by rkabir View Post
It looks like Art from Projectorreviews.com has an Optoma UHD65 and will be doing a first look soon, followed by a full review.

He posted a first look of the HT8050, another 4K DLP PJ, a few days ago.

http://www.projectorreviews.com/the-...ter-projector/

Still no review of the UHD 65 but examining Mr. Feierman's website, I wouldn't rule out the possibility that his UHD 65 review might be an exclusive for subscribers. I for one wouldn't mind to pay the annual fee, once the UHD 65 review is available.

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post #519 of 2008 Old 06-19-2017, 07:03 AM
 
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I looked at a few of their reviews and couldn't find any contrast measurements. They do talk about comparatible black levels but a number will suffice. No, not paying for a "pro review" site which can't even bother doing the most basic and important test on a display.
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post #520 of 2008 Old 06-19-2017, 09:07 AM
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post #521 of 2008 Old 06-19-2017, 10:13 AM
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post #522 of 2008 Old 06-19-2017, 11:19 AM
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that thing is huge
Thats what she said.
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post #523 of 2008 Old 06-19-2017, 11:50 AM
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I don't care if it's as big as a small horse I'll buy it all day long if it actually has good HDR

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post #524 of 2008 Old 06-19-2017, 12:18 PM
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on the amazon page of buyer questions, an optoma rep responded that he thinks they should be shipping about now.
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post #525 of 2008 Old 06-19-2017, 01:10 PM
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Originally Posted by am2model3 View Post
on the amazon page of buyer questions, an optoma rep responded that he thinks they should be shipping about now.
I noticed Best Buy now has it listed on their website. It is still in "Pre-Order" status though. I called them and asked if they had a release date in their system and they said they did not have a release date yet.
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post #526 of 2008 Old 06-19-2017, 05:15 PM
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Originally Posted by tomiy1 View Post
It has nice lens shift. A home theater version could be nice.
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post #527 of 2008 Old 06-19-2017, 09:36 PM
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It has nice lens shift. A home theater version could be nice.
AT $12,000 it better have more than just a nice lens shift!
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post #528 of 2008 Old 06-20-2017, 01:43 AM
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Can you all please save your comments for the UHZ 65 for the corresponding, proper thread?


https://www.avsforum.com/forum/24-dig...00-msrp-4.html


Already I don't like the irritating type designations the manufacturers use, but talking about the UHZ 65 in the thread for the UHD 65 will unnecessarily add to confusion (while we all want clarity, right?).

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post #529 of 2008 Old 06-20-2017, 02:50 AM
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Good news everyone.


According to Kraine's review of the Acer H7850 - http://www.projection-homecinema.fr/...-h7850-dlp-4k/ - the Acers and the Optomas are apparently using the same optical block and lens:


À noter que les futurs Optoma UHD550X/UHD60/UHD65 et l’ACER V7850 se trouveront tous équipés du même bloc optique.


This seems to confirm that the Optoma UHD projectors will - finally - have an offset of "0" (see lens range performance attached for the H7850).


And the quality of the optical block and lens is apparently relatively good and free of chromatic aberrations:


L’optique équipant le H7850 est relativement bonne puisque sans activer la super résolution nous ne mettons pas en avant de traces d’aberrations chromatiques.





However, overall performance of the H7850 was rather poor in a couple of departments, Kraine wondered if the RGBRGB color wheel of the V7850 would increase performance and provide better results for home theater applications.
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post #530 of 2008 Old 06-20-2017, 05:47 AM
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post #531 of 2008 Old 06-20-2017, 06:14 AM
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Quote:
Originally Posted by urbeenjammin1969 View Post

Where did you read that? Couldn't find it on the page you linked to.


"DCI-P3 color gamut coverage" has nothing to do with 3D.

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post #532 of 2008 Old 06-20-2017, 07:51 AM
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Where did you read that? Couldn't find it on the page you linked to.


"DCI-P3 color gamut coverage" has nothing to do with 3D.
It says it really big on the picture of the PJ.
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post #533 of 2008 Old 06-20-2017, 07:57 AM
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It says it really big on the picture of the PJ.

Then the page is not correctly loading for me, I just see the front view of the UHD 60, the product information and that's it. Can somebody please isolate and post the picture?

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post #534 of 2008 Old 06-20-2017, 08:19 AM
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Then the page is not correctly loading for me, I just see the front view of the UHD 60, the product information and that's it. Can somebody please isolate and post the picture?

https://pasteboard.co/1QB9v8ZLW.png

It's obviously a stupid pic and those guy shave no clue, just some random stock image, but still pretty funny.

According to an answered question on Amazon the UHD60 is expected to be shipping "this week" 5 days ago:

https://www.amazon.com/forum/-/Tx1HY...sin=B071P6KQZH
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post #535 of 2008 Old 06-20-2017, 08:32 AM
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Originally Posted by Frank714 View Post
Good news everyone.


According to Kraine's review of the Acer H7850 - http://www.projection-homecinema.fr/...-h7850-dlp-4k/ - the Acers and the Optomas are apparently using the same optical block and lens:


À noter que les futurs Optoma UHD550X/UHD60/UHD65 et l’ACER V7850 se trouveront tous équipés du même bloc optique.


This seems to confirm that the Optoma UHD projectors will - finally - have an offset of "0" (see lens range performance attached for the H7850).


And the quality of the optical block and lens is apparently relatively good and free of chromatic aberrations:


L’optique équipant le H7850 est relativement bonne puisque sans activer la super résolution nous ne mettons pas en avant de traces d’aberrations chromatiques.





However, overall performance of the H7850 was rather poor in a couple of departments, Kraine wondered if the RGBRGB color wheel of the V7850 would increase performance and provide better results for home theater applications.


800:1 native contrast? That's Epson home cinema 2040 levels of bad. I doubt a color wheel change is going to improve that stat-- in fact it could make it worse.

I'm seeing a disturbing trend among these new crop of 4k DLPs: native contrast seems to have taken a big step back. We need more reviews and more testing to be sure but I sure hope this isn't an inherent limitation of the new chip design. I can live with 2000:1 but 800:1?

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post #536 of 2008 Old 06-20-2017, 08:49 AM
 
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From the other 4K TI DLP reviews, using with RGBRGB colour wheels, they have around 1200-1400:1 contrast. RGBCYM apparently does sacrifice contrast for lumens. And that's a very bad deal, obviously. (for games/movies/tv at least).
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post #537 of 2008 Old 06-20-2017, 09:01 AM
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Quote:
Originally Posted by RLBURNSIDE View Post
From the other 4K TI DLP reviews, using with RGBRGB colour wheels, they have around 1200-1400:1 contrast. RGBCYM apparently does sacrifice contrast for lumens. And that's a very bad deal, obviously. (for games/movies/tv at least).
Do we know what the real native contrast of the 5040UB is? Or the SONY HW45ES?
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post #538 of 2008 Old 06-20-2017, 09:23 AM
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Just got shipping confirmation from PP. Shows up tomorrow.
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post #539 of 2008 Old 06-20-2017, 10:27 AM
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Just got shipping confirmation from PP. Shows up tomorrow.

Did you opt for the 60 or 65? Congrats!!!
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post #540 of 2008 Old 06-20-2017, 10:45 AM
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Just got shipping confirmation from PP. Shows up tomorrow.
Oh wow nice!

Really dying for some reviews here..
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