Optoma UHD52ALV - Page 11 - AVS Forum | Home Theater Discussions And Reviews
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post #301 of 315 Old 06-15-2020, 10:03 AM
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Originally Posted by David Sykes View Post
Thanks, that is reassuring but before I place an order just a few more questions and a request.

1. Optoma say the projector is 4:3 aspect-ratio compatible.
Does that simply mean black bands will be added at the sides ?

2. My motorised screen has a remote for up/down but no facility for an external 12V control signal.
That should be easy enough to add but what is the nature of the pulse when projector is turned on and again when turned off ?
In other words, is it a brief pulse on the same wire core for on and off or separate pulses on two cores ?

(I tried to add some links and test images but got error saying that I do not have enough posts yet.)
1) Yes.

2) Can't help here.

You need 5 posts to post links and images.
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post #302 of 315 Old 06-15-2020, 10:11 AM
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Originally Posted by frankie1974 View Post
whats the 3d like
3DBob says it's great. Of course it can be even better with higher brightness or for a larger screen, but the solution is rather expensive.
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post #303 of 315 Old 06-15-2020, 10:48 AM
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Originally Posted by frankie1974 View Post
whats the 3d like
Well, as the projector is generally out-of-stock in the UK but I found a seller who had just one left, I ordered it.
It will be delivered Tuesday together with a 15m fibre-optic HDMI cable.
I may have the glasses by the weekend.
I will post here and also start a new thread about 3D using a PC as source.
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post #304 of 315 Old 06-15-2020, 10:58 AM
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Quote:
Originally Posted by David Sykes View Post
Well, as the projector is generally out-of-stock in the UK but I found a seller who had just one left, I ordered it.
It will be delivered Tuesday together with a 15m fibre-optic HDMI cable.
I may have the glasses by the weekend.
I will post here and also start a new thread about 3D using a PC as source.
Two almost identical models available outside of the US are the UHD370x and UHD380x. The 380x is listed on the Optoma UK page.
https://www.optoma.co.uk/product-details/uhd380x
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post #305 of 315 Old 06-15-2020, 11:23 AM
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Originally Posted by noob00224 View Post
The 380x is listed on the Optoma UK page.
Yes, that is the other one I was considering as I was not interested in Alexa. However, I got the UHD52ALV for a cheaper price anyway.
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post #306 of 315 Old 06-15-2020, 12:08 PM
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Quote:
Originally Posted by noob00224 View Post
Two almost identical models available outside of the US are the UHD370x and UHD380x. The 380x is listed on the Optoma UK page.
https://www.optoma.co.uk/product-details/uhd380x
Yes, but I have checked and they are both out-of-stock on the Optoma UK site.
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post #307 of 315 Old 06-21-2020, 01:21 PM
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settings

has there been any user settings / tips posted on the board to try out
thank you
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post #308 of 315 Old 06-22-2020, 03:55 PM
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Pure Motion

Pure Motion, in my understanding, is for playing video shot in 24fps on 60hz monitors. It generated some transitional frames to reduce motion judder. I am using computer to play BD movie and the software player outputs signal in 4Kp24. Based on that, I don't need to turn Pure Motion on. Is my understanding correct?
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post #309 of 315 Old 06-22-2020, 04:17 PM
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Quote:
Originally Posted by HTPC8813 View Post
Pure Motion, in my understanding, is for playing video shot in 24fps on 60hz monitors. It generated some transitional frames to reduce motion judder. I am using computer to play BD movie and the software player outputs signal in 4Kp24. Based on that, I don't need to turn Pure Motion on. Is my understanding correct?
Check the projector's menu->info to see what the incoming signal is. Theoretically, you would want to use Pure Motion, if the incoming signal is 24hz. However, you should test it with Puremotion on/off to see what works best.
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post #310 of 315 Old 06-22-2020, 05:23 PM
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Quote:
Originally Posted by DunMunro View Post
Check the projector's menu->info to see what the incoming signal is. Theoretically, you would want to use Pure Motion, if the incoming signal is 24hz. However, you should test it with Puremotion on/off to see what works best.
That seems to the opposite than what is explained on Optoma website. Are you sure that PureMotion shall be turned on when PJ receives 24p signal?
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post #311 of 315 Old 06-22-2020, 06:06 PM
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Originally Posted by HTPC8813 View Post
That seems to the opposite than what is explained on Optoma website. Are you sure that PureMotion shall be turned on when PJ receives 24p signal?
The linked image shows how puremotion takes 4 sequential 24hz incoming frames and then creates 6 additional (4 +6 =10 or 4 x 2.5 = 10 ) intermediate frames to better translate the incoming 24hz signal to the 60hz output (24 x 2.5 = 60) of the projector.

I find that my UHD50 (no puremotion) usually looks fine with 24hz input, so you should test your UHD52ALV to see if puremotion is needed for that player and/or movie.
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post #312 of 315 Old 06-22-2020, 07:13 PM
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Quote:
Originally Posted by DunMunro View Post
The linked image shows how puremotion takes 4 sequential 24hz incoming frames and then creates 6 additional (4 +6 =10 or 4 x 2.5 = 10 ) intermediate frames to better translate the incoming 24hz signal to the 60hz output (24 x 2.5 = 60) of the projector.

I find that my UHD50 (no puremotion) usually looks fine with 24hz input, so you should test your UHD52ALV to see if puremotion is needed for that player and/or movie.
Thanks for the advise. However, one thing I still don't understand is if the input signal is 24p(or 24hz) and the projector supports 4K24p so it should runs at 24hz or siaplay 24frames per seconds. Or in another way to ask, does UHD52ALV (or any other projector) runs at a fixed frequency(refresh rate) or it adjust its frequency(refresh rate) based on input signal?

Edit: I think that I understand. It runs at 60Hz based on user manual, fixed.
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Last edited by HTPC8813; 06-22-2020 at 07:18 PM.
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post #313 of 315 Old 06-23-2020, 04:12 AM
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Quote:
Originally Posted by HTPC8813 View Post
Thanks for the advise. However, one thing I still don't understand is if the input signal is 24p(or 24hz) and the projector supports 4K24p so it should runs at 24hz or siaplay 24frames per seconds. Or in another way to ask, does UHD52ALV (or any other projector) runs at a fixed frequency(refresh rate) or it adjust its frequency(refresh rate) based on input signal?

Edit: I think that I understand. It runs at 60Hz based on user manual, fixed.
Except for some Benq 4K projectors, most 4K DLPs can't do native 24p. They do 60Hz, so a 24p input will result in 3:2 pulldown. On the UHD52ALV the 24p is interpolated to 30p, and then the frames repeated.
https://www.projectorreviews.com/opt...-capabilities/
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post #314 of 315 Old 06-29-2020, 09:56 AM
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is this the best projector for 3d?

Display: 77'' CX LG OLED, Valve Index, Sony PJ + Draper React 3.0 ALR
Audio: Arendal 1723S Tower S, 1723S Centre, 1723S Surrounds, KEF Q50a, BK Monolith Plus
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post #315 of 315 Old 07-10-2020, 09:11 AM
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Originally Posted by aoaaron View Post
is this the best projector for 3d?
I have the 51ALV and it's great for 3D. Very sharp colorful image. I assume the 52ALV to be as good or better, especially with the added brightness, which allows for a bigger screen.
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