Optoma UHD60/65 Owners Thread - Page 116 - AVS Forum | Home Theater Discussions And Reviews
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post #3451 of 3473 Old 11-27-2019, 05:05 PM
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Originally Posted by noob00224 View Post
I did not mean the input source, I meant the information that the 0.66 DMD displayed 4 million pixels.
I misunderstood what you were asking and of whom. Originally I don't think you were asking me this question. In any event I think the .66 chip and the .47 chips both display 4K pixels they just do it with different chipsets by either doubling the chip or quadrupling the chip mirrors. Is this not correct? Overall I think they have the same 4K resolution in the end.
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post #3452 of 3473 Old 11-27-2019, 05:23 PM
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Quote:
Originally Posted by Talontsi96 View Post
I misunderstood what you were asking and of whom. Originally I don't think you were asking me this question. In any event I think the .66 chip and the .47 chips both display 4K pixels they just do it with different chipsets by either doubling the chip or quadrupling the chip mirrors. Is this not correct? Overall I think they have the same 4K resolution in the end.
The displayed number of pixels is 8.3 million for both.
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post #3453 of 3473 Old 11-27-2019, 07:21 PM
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Originally Posted by noob00224 View Post
The displayed number of pixels is 8.3 million for both.
Yes 8.3K pixels is 4K is it not? Is anyone arguing that its different?

Anyway, I take it most of the people in this thread will lean toward the UHD60 since they own one so they probably picked it as their preference before purchase. I just wanted to know if perhaps the UHD50 would have richer colours due to the RGBRGB colour wheel.
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post #3454 of 3473 Old 11-27-2019, 07:58 PM
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Originally Posted by Talontsi96 View Post
Yes 8.3K pixels is 4K is it not? Is anyone arguing that its different?

Anyway, I take it most of the people in this thread will lean toward the UHD60 since they own one so they probably picked it as their preference before purchase. I just wanted to know if perhaps the UHD50 would have richer colours due to the RGBRGB colour wheel.
8.3 million pixels is the 4K specification.
4K UHD:



The RGBRGB color wheels, as it's said in the previous Viewsonic article has better colors.
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post #3455 of 3473 Old 11-27-2019, 08:05 PM
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Quote:
Originally Posted by noob00224 View Post
8.3 million pixels is the 4K specification.
4K UHD:



The RGBRGB color wheels, as it's said in the previous Viewsonic article has better colors.
Thans I'm leaning toward the UHD50 or the UHD51A at this moment.
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post #3456 of 3473 Old 11-27-2019, 08:30 PM
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Originally Posted by Talontsi96 View Post
Thans I'm leaning toward the UHD50 or the UHD51A at this moment.
The UHD51A has 3D, CFI, Alexa, and that's about it:
https://www.projectorreviews.com/opt...ll-under-2000/
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post #3457 of 3473 Old 11-27-2019, 09:00 PM
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Originally Posted by noob00224 View Post
The UHD51A has 3D, CFI, Alexa, and that's about it:
https://www.projectorreviews.com/opt...ll-under-2000/
When I asked for some advice of picking between the UHD60 vs the UHD50 I was given this answer by one expert. "We would recommend either the UHD65 with better color and contrast or the UHD51A almost but not quite the contrast of the UHD65. The 50 does not have the Pure engine and 60 has weaker color."

I'm not sure what that "pure engine" refers to but this is why I threw in the UHD51A into the mix...
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post #3458 of 3473 Old 11-29-2019, 02:57 PM
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the uhd 60 has more contrast: 1,000,000 to 1. vs 500,00 to 1.



You can probably find a comparison online somewhere.



the TI DLP XPR chips are: .47chip is a 1080p native 2mill pixel chip oscillating 4x to get your 8.3mill pixels. the .66 chip is native 4mill pixels 2716x1528 for 4.15mill pixels oscillating 2x to get 8.3mill pixels.



Other thing to check would be : latency input for gaming. uhd60 is pretty good at about .60 ms input lag. The uhd50 could possibly be higher?; not sure what it is. uhd65 has higher input lag.



If you are serious about your 4K UHD movie blu rays; you will want to get a Panasonic UB420 or ub820 for better HDR optimization/tone mapping; the xbox x is terrible for 4K UHD movies. (i just got an ub820 and its amazing what it can do for picture quality on a uhd60) can send HDR optimized tone map signal or SDR bt2020 WCG w/o HDR for amazing imagery.
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post #3459 of 3473 Old 12-01-2019, 09:32 AM
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Quote:
Originally Posted by am2model3 View Post
the uhd 60 has more contrast: 1,000,000 to 1. vs 500,00 to 1.



You can probably find a comparison online somewhere.



the TI DLP XPR chips are: .47chip is a 1080p native 2mill pixel chip oscillating 4x to get your 8.3mill pixels. the .66 chip is native 4mill pixels 2716x1528 for 4.15mill pixels oscillating 2x to get 8.3mill pixels.



Other thing to check would be : latency input for gaming. uhd60 is pretty good at about .60 ms input lag. The uhd50 could possibly be higher?; not sure what it is. uhd65 has higher input lag.



If you are serious about your 4K UHD movie blu rays; you will want to get a Panasonic UB420 or ub820 for better HDR optimization/tone mapping; the xbox x is terrible for 4K UHD movies. (i just got an ub820 and its amazing what it can do for picture quality on a uhd60) can send HDR optimized tone map signal or SDR bt2020 WCG w/o HDR for amazing imagery.
Is this for 4k bluray only or also 4k UHD streaming from let's say Vudu? Wondering if I should get a Nvidia Shield to stream over my xbox one X.
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post #3460 of 3473 Old 12-01-2019, 02:07 PM
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Originally Posted by master02 View Post
Is this for 4k bluray only or also 4k UHD streaming from let's say Vudu? Wondering if I should get a Nvidia Shield to stream over my xbox one X.
It's for any 4K HDR signal. The Panasonic HDR Optimizer is great option that I don't think anything other than madvr/Envy/other high end external devices can match.
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post #3461 of 3473 Old 12-02-2019, 02:42 PM
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4K UHD Atmos streaming over Vudu on XboxX can look very good. (in my case, great w/HDR off) Its impressive; but your 4K UHD disc with Atmos will be better. (vudu is impressive; but the video/audio signal is still compressed vs. the disc)
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post #3462 of 3473 Old 12-06-2019, 09:23 PM
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Anyone seen this? Displays at 4800 x 2160? Just started and the only way to fix is continue to resync over and over. Just bad hdmi? Tried multiple consoles and blu ray to play 4K.
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post #3463 of 3473 Old 12-07-2019, 04:30 PM
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I have just purchased the UHD65 optoma and to my surprise I have the C15 firmware.
But I have a problem I am the "SUPER WIDE", with my old Optoma HD82 I correctly cut the image to make it split 2: 1 instead with the UHD65 if I enable it I practice a Crop cutting also the sides. I made several corrections on "Digital zoom" and "Edge Mask" but I couldn't.

Has anyone used this option?
Thanks from Fabio
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post #3464 of 3473 Old 12-09-2019, 10:22 PM
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regarding to firmware upgrade do I need to bring the unit to their Fremont headquarter or can do it remotely?
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post #3465 of 3473 Old 12-11-2019, 12:38 PM
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Question recommended screen size for sitting distance?

Two years ago I bought a Sony VPL-HW45ES and now I'm looking at the Optoma UHD60 or 65 for a new room that is larger. Back then I recall spending a ton of time with viewing distance and screen size calculators, and ambient light, screen gain, lens magnification and other adjustments with tools online to help me dial in exactly what would be ideal for the room I set it all up in. I know project central has the throw distance, screen size and screen gain calculator but it doesn't help me with the ideal screen size for viewing distance calcs. What is the recommended tools for helping me figure this out?

I found with my Sony and the room it's in that I prefer a screen size a bit larger than the recommendation that I found at the time. It's still great, but another 20" in diagonal probably would have been appreciated.

I appreciate any guidance to help me sort out the best setup for the room that I have. Thanks!

Scott
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post #3466 of 3473 Old 12-11-2019, 12:52 PM
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Quote:
Originally Posted by scottlindner View Post
Two years ago I bought a Sony VPL-HW45ES and now I'm looking at the Optoma UHD60 or 65 for a new room that is larger. Back then I recall spending a ton of time with viewing distance and screen size calculators, and ambient light, screen gain, lens magnification and other adjustments with tools online to help me dial in exactly what would be ideal for the room I set it all up in. I know project central has the throw distance, screen size and screen gain calculator but it doesn't help me with the ideal screen size for viewing distance calcs. What is the recommended tools for helping me figure this out?

I found with my Sony and the room it's in that I prefer a screen size a bit larger than the recommendation that I found at the time. It's still great, but another 20" in diagonal probably would have been appreciated.

I appreciate any guidance to help me sort out the best setup for the room that I have. Thanks!

Scott
I also noticed when using the projector central calculator that the gain for this projector seems to be over the top. It seems for my throw distance, screen size, and all other settings that I need a screen gain of 0.4. It makes me think I'm not doing something right since my room is 19ft depth so the viewing distance will be 16'-18' with somewhere around a 175" to 200" diagonal screen. Does this projector really kick that much light, or is there something stooped that I'm doing?
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post #3467 of 3473 Old 12-11-2019, 01:28 PM
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Quote:
Originally Posted by scottlindner View Post
I also noticed when using the projector central calculator that the gain for this projector seems to be over the top. It seems for my throw distance, screen size, and all other settings that I need a screen gain of 0.4. It makes me think I'm not doing something right since my room is 19ft depth so the viewing distance will be 16'-18' with somewhere around a 175" to 200" diagonal screen. Does this projector really kick that much light, or is there something stooped that I'm doing?

For screen size it's a personal preference, just use it and see what looks right.

Have you used it on a wall and found 175-200 inches ok?


Same with the resolution, it varies from person to person.


The UHD60/65 are definitely not bright enough for a screen that size, check out the lumens measurements in these two links:
https://www.projectorcentral.com/Opt...D60-review.htm
https://www.projectorcentral.com/Eps...D65-review.htm

You take the screen dimensions:
http://screen-size.info/
Calculate the square footage:
https://www.calculatorsoup.com/calcu...calculator.php
And then divide the the lumens measured in the reviews above by the square footage. The result will be the fL of the screen.
15fL is recommended for SDR, 30+fL for HDR.
There is also the issue of how much light is lost when the zoom is used, also noted in the reviews.


In the 4K space, not even the HC3800 might be bright enough for a screen that size.
Maybe with some ALR paint, because the screen would be very expensive, if even available.

I'm not sure what projectors in the home theater segment exist that could power that, maybe in the professional/venue segment.
Some UST's have high lumens, but I don't know if they can throw an image that size.

Last edited by noob00224; 12-11-2019 at 01:33 PM.
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post #3468 of 3473 Old 12-11-2019, 03:12 PM
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I'm not sure what projectors in the home theater segment exist that could power that, maybe in the professional/venue segment.
Some UST's have high lumens, but I don't know if they can throw an image that size.
So this discussion has shifted to what makes sense for a room with 19ft wall to wall distance which is both the projector and the screen size. I don't see a "general projector help" section at AVS. Do you have any ideas where I might best drop this question for assistance?
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post #3469 of 3473 Old 12-11-2019, 03:27 PM
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Originally Posted by scottlindner View Post
So this discussion has shifted to what makes sense for a room with 19ft wall to wall distance which is both the projector and the screen size. I don't see a "general projector help" section at AVS. Do you have any ideas where I might best drop this question for assistance?
As it's mentioned before, there is no screen diagonal to seating distance ratio that everyone will like.
It's user specific.

A discussion on this topic:
https://www.avsforum.com/forum/68-di...ed-angles.html

You could make a new thread on the sub forum:
https://www.avsforum.com/forum/68-di...-000-usd-msrp/
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post #3470 of 3473 Old 12-11-2019, 03:36 PM
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That link was perfect. The simplicity of 10" to 12" per foot of viewing distance is good enough. It comes up with what I had suspected. I probably want something in the 175" to 200" diagonal range for screen size. Jeebus that is ginormous. That's a 7-8ft tall screen!
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post #3471 of 3473 Old 12-11-2019, 04:05 PM
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That link was perfect. The simplicity of 10" to 12" per foot of viewing distance is good enough. It comes up with what I had suspected. I probably want something in the 175" to 200" diagonal range for screen size. Jeebus that is ginormous. That's a 7-8ft tall screen!
That is a very general ratio.
It differs from person to person. One user likes to sit at 11ft from an 150" screen.

What also needs to be taken in consideration is the type of content watched. Generic TV broadcasts will look to big on a large screen, but a movie will look fine.
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post #3472 of 3473 Old 12-11-2019, 04:09 PM
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Quote:
Originally Posted by noob00224 View Post
That is a very general ratio.
It differs from person to person. One user likes to sit at 11ft from an 150" screen.

What also needs to be taken in consideration is the type of content watched. Generic TV broadcasts will look to big on a large screen, but a movie will look fine.
Movies and video games mostly. Maybe some NHL and NFL but that isn't the primary content.
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post #3473 of 3473 Old 12-11-2019, 04:15 PM
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Movies and video games mostly. Maybe some NHL and NFL but that isn't the primary content.
Some projectors have motorized zoom with memory. So they can have different sizes screens.

It's difficult to tell how you'll fell about the image without seeing it.

Best to make a new thread, but with a screen that size I don't know if there are any 4K projectors in the home cinema segment.
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