BenQ LK970: 4K DLP, laser, $12,999k MSRP - Page 81 - AVS Forum | Home Theater Discussions And Reviews
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post #2401 of 2424 Old 06-10-2019, 04:26 PM
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I am pretty sure Kris was referring to the actual dimming mode on the 970. I have actually never used that setting other than testing and consider it useless because of the reasons Kris pointed out. (It takes the brightness way down to conserve laser life and ruins the color balance) The behavior that Citation and I were discussing occur in Eco and Normal power modes.



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Originally Posted by Mike Garrett View Post
Kris Deering explained this. Search out his posts. If I recall correctly it was reducing the white point, dimming the image, not increasing contrast. This is why people saw a difference in power usage on the projector.
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post #2402 of 2424 Old 06-10-2019, 04:26 PM
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Quote:
Originally Posted by Mike Garrett View Post
Kris Deering explained this. Search out his posts. If I recall correctly it was reducing the white point, dimming the image, not increasing contrast. This is why people saw a difference in power usage on the projector.
I've read every post Kris Deering has made in this thread, and I don't see where he has concluded this. Please point me to the post.
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post #2403 of 2424 Old 06-10-2019, 04:50 PM
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Quote:
Originally Posted by Citation4444 View Post
I've read every post Kris Deering has made in this thread, and I don't see where he has concluded this. Please point me to the post.
He did not post it in this thread. It was either the 990 or one of the 9060 threads.
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post #2404 of 2424 Old 06-11-2019, 06:15 AM
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There was initial discussion between dave harper and woofer that eco and normal modes enabled some sort of dimming but in looking at the manual it appears this is not the case. The dynamic power mode is only if you're using custom and adjust it manually. And you only get the full black if you hit hide on the remote.

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post #2405 of 2424 Old 06-11-2019, 03:19 PM
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Quote:
Originally Posted by Citation4444 View Post
Here they are for each laser mode, each time adjusted for d65 in Cinema Picture Mode.

Normal 1461
Economic 1512
Dimming 900
Custom 100% 1459
Custom 85% 1356 I chose 85% as it gives the same brightness as Economic mode.


Normal and Custom 100% are virtually identical in off/on contrast. Don't see any dynamic dimming going on in these measurements. I agree the blacks look darker in program material, but I don't know how to objectively measure that.
I could have sworn woofer measured 4500:1 or so in one of the modes which uses Automatic Power Control. He could also see it happening. Dave has also talked about this a lot, this projector defintiely has SOME dimming according to a number of people..

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post #2406 of 2424 Old 06-11-2019, 03:46 PM
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I could have sworn woofer measured 4500:1 or so in one of the modes which uses Automatic Power Control. He could also see it happening. Dave has also talked about this a lot, this projector defintiely has SOME dimming according to a number of people..
I agree that subjectively it appears some dynamic dimming is going on. I’m looking for a way to objectively measure it. I’ve been in contact with woofer via pm trying to find out how he measured it.
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post #2407 of 2424 Old 06-11-2019, 05:31 PM
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Quote:
Originally Posted by Javs View Post
I could have sworn woofer measured 4500:1 or so in one of the modes which uses Automatic Power Control. He could also see it happening. Dave has also talked about this a lot, this projector defintiely has SOME dimming according to a number of people..
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I agree that subjectively it appears some dynamic dimming is going on. I’m looking for a way to objectively measure it. I’ve been in contact with woofer via pm trying to find out how he measured it.
I posted earlier that I thought I remembered Kris saying the LK970 did not have any dynamic dimming. I just confirmed that info with Kris.
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post #2408 of 2424 Old 06-13-2019, 10:15 AM
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Should i have my BenQ LK970 upconvert dvds?

Should i have my Panasonic UB820 or my BenQ LK970 projector upconvert dvds?
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post #2409 of 2424 Old 06-13-2019, 10:23 AM
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Yes, the scaling should be better on the Panasonic.


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Should i have my Panasonic UB820 or my BenQ LK970 projector upconvert dvds?
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post #2410 of 2424 Old 06-13-2019, 10:28 AM
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Do i have to turn off the X4400H receivers upconverting and turn on the Panasonics upconverting?
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post #2411 of 2424 Old 06-13-2019, 11:44 AM
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I would set your receiver as a pass through and let the Panasonic do the scaling. Unless the receiver is better at scaling then the Panasonic which I doubt.
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post #2412 of 2424 Old 06-13-2019, 02:04 PM
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Does the projector have anything to do with upscaling or is it just the receiver and the 4k blu ray player?
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post #2413 of 2424 Old 06-13-2019, 03:48 PM
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The projector will upscale video to the native resolution of the unit but I don't think the scaling is as good on the BenQ vs the Panasonic player.
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post #2414 of 2424 Old 06-13-2019, 04:50 PM
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12GAGE told me to still use 4k HDR movies on BenQ LK970 projector. I trust his knowledge but was wondering what other people thought about this with this projector. Someone else said i should stick with SDR movies so basically regular blu rays. What does everyone think?
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post #2415 of 2424 Old 06-13-2019, 05:13 PM
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Quote:
Originally Posted by sound2017 View Post
12GAGE told me to still use 4k HDR movies on BenQ LK970 projector. I trust his knowledge but was wondering what other people thought about this with this projector. Someone else said i should stick with SDR movies so basically regular blu rays. What does everyone think?
Any projector using the TI Pixel shifting DMD, I would not be sending 1080p to it, it will look soft. If you are going to watch a bluray, have your player upscale it to 4K, and the image will be very sharp.

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post #2416 of 2424 Old 06-13-2019, 05:46 PM
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I would advise for you a simple setup.
1. Let your player do the scaling to 4k and you will be fine.
2. If you want to get 4K hdr Blu-ray’s get a Panny 820 or better and let it do the tone mapping since the 970 is not a native hdr unit.


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12GAGE told me to still use 4k HDR movies on BenQ LK970 projector. I trust his knowledge but was wondering what other people thought about this with this projector. Someone else said i should stick with SDR movies so basically regular blu rays. What does everyone think?
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post #2417 of 2424 Old 06-13-2019, 08:51 PM
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I heard the only advantage the Panny 820 would offer over my Sony X800 is if my BenQ LK970 is capable of displaying SDR BT2020. I am going to try to check if the BenQ has this.

But, would the 820 be worth buying even if my BenQ LK970 is not capable of displaying SDR BT2020 if the 820 can upscale DVD and Blu Ray better than my Sony X800?
I shouldnt have said i had a panny 820 yet. Was going to buy it tonight if its worth it.

Last edited by sound2017; 06-13-2019 at 09:04 PM.
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post #2418 of 2424 Old 06-14-2019, 04:33 AM
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One reason people like the Panasonic for this unit is I believe it will do a proper color conversion so you can play SDR 2020. The 970 does not support rec 2020 so the Panny converts 2020 to 709 for the LK 970. The resulting image is the best you will get for the 970 without moving to something much more advanced.

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I heard the only advantage the Panny 820 would offer over my Sony X800 is if my BenQ LK970 is capable of displaying SDR BT2020. I am going to try to check if the BenQ has this.

But, would the 820 be worth buying even if my BenQ LK970 is not capable of displaying SDR BT2020 if the 820 can upscale DVD and Blu Ray better than my Sony X800?
I shouldnt have said i had a panny 820 yet. Was going to buy it tonight if its worth it.
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post #2419 of 2424 Old 06-14-2019, 10:42 AM
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Couple questions:

1. In the video menu should the 4k Signal Format be set to "standard" or "enhanced" for my LK970. The LK970 is not an HDR PJ.

2. How do i turn off the upscaling on the LK970 so my Sony X800 takes care of upscaling? Or does the LK970 have an upscaling option? Can someone help me to shut off the upscaling on my LK970 so the Sony can take care of the upscaling?

Last edited by sound2017; 06-14-2019 at 07:39 PM.
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post #2420 of 2424 Old 06-15-2019, 10:30 AM
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Quote:
Originally Posted by sound2017 View Post
Couple questions:

1. In the video menu should the 4k Signal Format be set to "standard" or "enhanced" for my LK970. The LK970 is not an HDR PJ.

2. How do i turn off the upscaling on the LK970 so my Sony X800 takes care of upscaling? Or does the LK970 have an upscaling option? Can someone help me to shut off the upscaling on my LK970 so the Sony can take care of the upscaling?
It woudn't be a setting of the projector. You need to set the Sony player to 4K output (instead of the option that maintains original source resolution).
Regardless, you won't be able to avoid all the image processing in the LK970 as it has to do some scaling to go from 4K input pixels to 2x 2.5K for the image shifting XPR process.
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post #2421 of 2424 Old 06-15-2019, 12:58 PM
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Ok thank you. What about my first question tho...

In the video menu should the 4k Signal Format be set to "standard" or "enhanced" for my LK970. The LK970 is not an HDR PJ.
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post #2422 of 2424 Old 06-16-2019, 10:24 AM
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Quote:
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Ok thank you. What about my first question tho...

In the video menu should the 4k Signal Format be set to "standard" or "enhanced" for my LK970. The LK970 is not an HDR PJ.
Standard or Enhanced is completely dependent on how the source is configured. It doesn't relate to HDR vs SDR, it is about whether the source is outputting levels 16-235 or 0-255 and scaling the input range correctly to the gamma. It should match your source.
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post #2423 of 2424 Old 06-17-2019, 08:25 AM
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Just pulled the trigger on the LK970. Can’t wait!
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post #2424 of 2424 Old 06-18-2019, 07:58 AM
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If any LK970 owners are willing to share (through PM) where they got their units and the prices that would be appreciated, some folks have mentioned getting some good deals but I am not sure where to look. Refurbed from BenQ direct is primarily where I am looking right now but if I can get it new for not to much of a difference I would definitely prefer that route. Thanks!
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