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post #1 of 88 Old 11-13-2018, 04:34 PM - Thread Starter
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BenQ LK990

http://business-display.benq.com/en...ors/lk990.html


Is the BenQ LK990 a projector designed for Home Theater use or more of a Business Projector?

I would think a near perfect Home Theater projector would want Rec 2020 and as many HDR Formats as possible... HDR10, HDR10+, HLG, Advanced HDR by Technicolor, Dolby Vision , HDMI 2.1 and High Lumens.... what ever that numbers is 5000???? 6000???
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post #2 of 88 Old 11-13-2018, 06:51 PM
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Unfortunately, we won't know until someone gets a unit for testing. Hopefully Dave H can secure a unit and I maybe able to get one as well. The previous model is excellent however. The only thing that concerns me is the color gamut coverage. I hope they didn't trade color for lumens, because the LK970 doesn't need to really be any brighter. If BenQ improved the laser control in standard viewing without any pumping then the unit should be an excellent performer. Honestly, they just needed to make the laser dimming about 20% more aggressive and that would have been perfect for me. For the eco blank mode, I can see 3m:1 if they further reduced the laser power or even cut the power in that mode. The current model get 100k:1 at about 15-20% laser power in eco blank.
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post #3 of 88 Old 11-13-2018, 09:40 PM
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Originally Posted by 12GAGE View Post
Unfortunately, we won't know until someone gets a unit for testing. Hopefully Dave H can secure a unit and I maybe able to get one as well. The previous model is excellent however. The only thing that concerns me is the color gamut coverage. I hope they didn't trade color for lumens, because the LK970 doesn't need to really be any brighter. If BenQ improved the laser control in standard viewing without any pumping then the unit should be an excellent performer. Honestly, they just needed to make the laser dimming about 20% more aggressive and that would have been perfect for me. For the eco blank mode, I can see 3m:1 if they further reduced the laser power or even cut the power in that mode. The current model get 100k:1 at about 15-20% laser power in eco blank.
Hi 12GAGE,

I placed my order for LK990 and have to wait 4-6 weeks, LK970 do have stock.


My only concern is the Color Gamut, the official site said it only can go 92% of BT709, it is a big step backward from LK970 as it can go around 90% of DCI-P3.

However, LK990 supports HDR and BenQ advertised that their HDR color rendering is better than other HDR projector brands and they also mentioned that the lens of LK990 have been optimized for HDR projection.

Actually I am very worry about the color of LK990 will very under saturation, but I wait more lumen so that I choose LK990 but not X12000H.

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post #4 of 88 Old 11-13-2018, 11:21 PM
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Originally Posted by MMC57 View Post
http://business-display.benq.com/en...ors/lk990.html


Is the BenQ LK990 a projector designed for Home Theater use or more of a Business Projector?

I would think a near perfect Home Theater projector would want Rec 2020 and as many HDR Formats as possible... HDR10, HDR10+, HLG, Advanced HDR by Technicolor, Dolby Vision , HDMI 2.1 and High Lumens.... what ever that numbers is 5000???? 6000???
BenQ likely designated thr lk990 as business/pro due to its very high brightness suitable for ambient light as it's.key feature.

On the other hand, the ht8060 and ht9060 are likely designated home theater as they focus more on color accuracy, wider color gamut (ht9060 only), lower brightness thats adequate for dark HT, and lower likelihood of RBE due to faster color cycling.

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post #5 of 88 Old 11-14-2018, 12:09 AM
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I asked about the color gamut and the Dealer replied me as follow:-

LK970: REC709 - 95% chip 0.66"
LK990: REC709 - 92% chip 0.67"

what difference between 0.66 and 0.67 chip?

Seems LK970/LK990 can't go beyond BT709 color gamut?

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post #6 of 88 Old 11-14-2018, 09:47 AM
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Quote:
Originally Posted by chhanthony View Post
I asked about the color gamut and the Dealer replied me as follow:-

LK970: REC709 - 95% chip 0.66"
LK990: REC709 - 92% chip 0.67"

what difference between 0.66 and 0.67 chip?

Seems LK970/LK990 can't go beyond BT709 color gamut?
They use the same chip its just rounded differently for the marketing.

If you want true dci p3 coverage need to get the ht9060/x12000h
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post #7 of 88 Old 11-17-2018, 02:37 PM
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The BenQ announcement for their 11 new projectors discusses the LK990 (0.66" chip; 6000 lumens) and LK952 (0.47" chip; 5000 lumens).

In situations where projection targets a larger audience, as is the case with companies or amphitheater exposures BenQ recommends the use of the projector LK952, with a DLP Single Projection System 0.47 "XPR 4K that can reproduce 4K UHD images with 5000 ANSI lumens and contrast ratio 100,000: 1. Their diagonal can vary between 30 and 300 "after a projection ratio of 1.36-2.18 with zoom 1.6x

And when the content to be played is the entertainment for bars and cinemas, BenQ LK990 is the best choice. It uses a DLP Single 0.67 "4K for Project 4K UHD images with a 30 to 300-inch diagonal, 6000 ANSI Lumens and 100,000: 1 Contrast Luminance with a projection ratio of 1.38-2.02 and Zoom 1.47x IP6X is also ce certified for IP6X certified dust and can therefore be used safely for outdoor cinemas, including projections in any position, and in addition, the LK990 uses a revolutionary fluid cooling system and advanced temperature sensors to work for extended periods of time


The LK952 (http://business-display.benq.com/en...k952/spec.html) is already available for (pre)order from B&H and other places at a nice price point. Since the LK990 has the larger chip, larger case, and cooling, it should be several $k more expensive than the LK952. The LK990 is a big unit, and at this point I'm leaning towards the smaller size, lower cost, and lighter weight of the LK952.

I would really like a BenQ DCI-P3 HLD LED projector (HT9060, X12000H, and the previous models), but that is beyond my price range. The LK990 doesn't appear to have the larger color gamut that HLD LED's provide.


Scott

Edit: BenQ's announcement mentioned above http://vaaju.com/romaniaeng/benq-la...entertainment/

Last edited by 645824; 11-17-2018 at 02:55 PM.
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post #8 of 88 Old 12-30-2018, 03:07 PM
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On the specs pages for these projectors:

http://business-display.benq.com/en...k952/spec.html

They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.

The BenQ site says "The Contrast is measure by Full On Full Off standard."


Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.
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post #9 of 88 Old 12-30-2018, 03:19 PM
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Quote:
Originally Posted by wombats View Post
On the specs pages for these projectors:

http://business-display.benq.com/en...k952/spec.html

They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.

The BenQ site says "The Contrast is measure by Full On Full Off standard."


Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.
Does it matter, because if they are listing either as native, then it is complete fiction.

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post #10 of 88 Old 12-30-2018, 03:52 PM
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Originally Posted by Mike Garrett View Post
Does it matter, because if they are listing either as native, then it is complete fiction.
I'll take that as a hint that unless I want the brightest pure white screen possible under $4k I should probably stick with the JVC.

Yeah I'm developing my snake-oil senses in this new projector world. I like to keep an open mind even if maybe I get bitten sometimes.
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post #11 of 88 Old 12-30-2018, 06:53 PM
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Quote:
Originally Posted by wombats View Post
On the specs pages for these projectors:

http://business-display.benq.com/en...k952/spec.html

They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.

The BenQ site says "The Contrast is measure by Full On Full Off standard."


Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.

Full on/off with a laser should be infinite because a laser can shut down completely. I'm not sure if these fully shut down though. Maybe someone like Dave Harper or some other owner of the LK970/LK990 can tell us.
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Originally Posted by Aztar35 View Post
Full on/off with a laser should be infinite because a laser can shut down completely. I'm not sure if these fully shut down though. Maybe someone like Dave Harper or some other owner of the LK970/LK990 can tell us.
If the laser shuts off, you need to use a pattern with a single white pixel in the corner. Then mask off the pixel and measure the black level.

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post #13 of 88 Old 12-30-2018, 07:18 PM
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Just a point of note, at least on the 970 the laser does not shut completely off. In that mode it is indeed true black. I wouldn’t be surprised to see pretty high contrast numbers using that black threshold. It is a bit misleading however because the black level never goes that low with actual content. It is still better than most would expect from a DLP however.


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Quote:
Originally Posted by Aztar35 View Post
Full on/off with a laser should be infinite because a laser can shut down completely. I'm not sure if these fully shut down though. Maybe someone like Dave Harper or some other owner of the LK970/LK990 can tell us.
If the laser shuts off, you need to use a pattern with a single white pixel in the corner. Then mask off the pixel and measure the black level.
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post #14 of 88 Old 12-30-2018, 08:01 PM
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If the laser shuts off, you need to use a pattern with a single white pixel in the corner. Then mask off the pixel and measure the black level.
Interesting, the quote he referenced was that contrast was measured by the Full On Full Off standard.

Quote:
Originally Posted by 12GAGE View Post
Just a point of note, at least on the 970 the laser does not shut completely off. In that mode it is indeed true black. I wouldn’t be surprised to see pretty high contrast numbers using that black threshold. It is a bit misleading however because the black level never goes that low with actual content. It is still better than most would expect from a DLP however.
Thanks, 12Gage. So it seems it can hit the high numbers but not in actual content, you're saying. Anyway, I know people who have the LK970 rave about its overall performance. I'm still interested in seeing a demo of either the LK970 or the LK990.

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Originally Posted by wombats View Post
On the specs pages for these projectors:

http://business-display.benq.com/en...k952/spec.html

They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.

The BenQ site says "The Contrast is measure by Full On Full Off standard."


Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.
If your sole goal is best black levels, go for a used JVC X990. I had one and contrast and black level were reference.

Lasers give calmness and stability to the image. I did have the laser DLP, UHZ65, before I ran into an issue with it. (By the way, that had a great dimming algo, and I measured the UHZ65 contrast in dynamic black 2 [middle dimming option] at over 35,000:1, and blacks looked great.) I really liked the sharpness/precision, tone mapping, colors, brightness and motion on the laser DLP more than on the JVC X990. I thought the overall picture on the laser was better. The weakness of the JVC X990, IMO, was in its processing. In comparison to the laser's, the image on the JVC X990 looked a bit raw; I saw plenty of black crush and pixel noise and difficult tone-mapping, even using an external device... was frustrating. I know of one AVS member, tnaik4, who has the LK970 and a JVC RS440, and he said since the LK970, he now mostly uses the LK970. Of course, I have not yet seen operation of or measured any of these new JVCs. And I don't know your seller's pre-order pricing policy, but if you can, I would definitely try to demo both the LK990 and the NX7.

By the way, I returned the UHZ65 due to a problem with its on-screen menu/displaying odd hz. And as I pulled up the menu more and more to see if the problem was still there, I began to see more and more rainbows. However, owners of the LK970 are reporting no meaningful issues with rainbows. I would think the LK990 would be similar there.

Good luck and I hope that helps.
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post #15 of 88 Old 12-31-2018, 06:47 AM
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Quote:
Originally Posted by wombats View Post
On the specs pages for these projectors:

http://business-display.benq.com/en...k952/spec.html

They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.

The BenQ site says "The Contrast is measure by Full On Full Off standard."


Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.
Yeah the numbers arent real, i measured native contrast around 3000:1 on lk970, but it does dim to true black on eco blank function but not as aggressive in actual content.

Like aztar said if black level is your most important aspect than go for NX-7 if u want native 4k, otherwise the x990.
I used to put black level as a priority specially after seeing and buying my first jvc which was the x590. I kept reading great things about the BenQ Lk970 and i decided to get one, the blacks in scenes with bright objects looks very inky because its so bright, in very very dark scenes its not the best but acceptable and thats where the JVC shines,keep in mind though that shadow details are excellent and i find myself saying wow on so many scenes on the lk970 due to the combination of brightness/clarity/colors and an amazing lens, on a 135inch 16:9 1.1 gain white screen its so freaking bright, HDR looks amazing on it with Madvr tone mapping or harpervision settings and gaming is not even close, looks like a giant flat panel.
Do i wish JVC would make a 5000lumens 4k projector with its native contrast under $10k? or this BenQ would have jvc native contrast?Ofcourse i do but that doesnt seem doable anytime soon for that price.
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post #16 of 88 Old 12-31-2018, 07:06 AM
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Originally Posted by tnaik4 View Post
Yeah the numbers arent real, i measured native contrast around 3000:1 on lk970, but it does dim to true black on eco blank function but not as aggressive in actual content.

Like aztar said if black level is your most important aspect than go for NX-7 if u want native 4k, otherwise the x990.
I used to put black level as a priority specially after seeing and buying my first jvc which was the x590. I kept reading great things about the BenQ Lk970 and i decided to get one, the blacks in scenes with bright objects looks very inky because its so bright, in very very dark scenes its not the best but acceptable and thats where the JVC shines,keep in mind though that shadow details are excellent and i find myself saying wow on so many scenes on the lk970 due to the combination of brightness/clarity/colors and an amazing lens, on a 135inch 16:9 1.1 gain white screen its so freaking bright, HDR looks amazing on it with Madvr tone mapping or harpervision settings and gaming is not even close, looks like a giant flat panel.
Do i wish JVC would make a 5000lumens 4k projector with its native contrast under $10k? or this BenQ would have jvc native contrast?Ofcourse i do but that doesnt seem doable anytime soon for that price.
Of course it's doable... cost is never the issue. JVC and SONY are essentially 'monopolies' on their own 4K chips. Other than them, all the other projector manufacturers have to get off the shelf from TI and TI only makes DLP chips with so-so contrast.

So, if you break down the cost of these projectors, every component is essentially the same,... same great glass/lens, same or more or less processors, same cost in projector body, boards, etc... In fact, the light source is even more expensive in the Benq, so, everything being equal, you can make a projector with high contrast (if the chips are monopolies) and high lumens output...

Sony and JVC are just controlling their prices..
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Thanks. This is an extremely accurate and balanced statement in my opinion.



Quote:
Originally Posted by tnaik4 View Post
Yeah the numbers arent real, i measured native contrast around 3000:1 on lk970, but it does dim to true black on eco blank function but not as aggressive in actual content.

Like aztar said if black level is your most important aspect than go for NX-7 if u want native 4k, otherwise the x990.
I used to put black level as a priority specially after seeing and buying my first jvc which was the x590. I kept reading great things about the BenQ Lk970 and i decided to get one, the blacks in scenes with bright objects looks very inky because its so bright, in very very dark scenes its not the best but acceptable and thats where the JVC shines,keep in mind though that shadow details are excellent and i find myself saying wow on so many scenes on the lk970 due to the combination of brightness/clarity/colors and an amazing lens, on a 135inch 16:9 1.1 gain white screen its so freaking bright, HDR looks amazing on it with Madvr tone mapping or harpervision settings and gaming is not even close, looks like a giant flat panel.
Do i wish JVC would make a 5000lumens 4k projector with its native contrast under $10k? or this BenQ would have jvc native contrast?Ofcourse i do but that doesnt seem doable anytime soon for that price.
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Quote:
Originally Posted by wombats View Post
On the specs pages for these projectors:



http://business-display.benq.com/en...k952/spec.html



They list 3,000,000:1 contrast but most of the announcement sites and sellers list 100,000:1 native.



The BenQ site says "The Contrast is measure by Full On Full Off standard."





Something tells me that it would be a mistake to cancel my JVC NX7 pre-order and get an LK9xx model? The BenQ numbers on paper smell rotten except for the brightness.

It would only be a mistake if ALL you care about is the lowest black levels and nothing else. Just about every other aspect except maybe slightly higher color gamut coverage, including shadow details as tnaik said, is superior on the LK970.

You have to see it properly setup to understand. All those that have, have agreed. All those that haven’t just spew the old stereotype about what a DLP is supposed to look like, as evidenced by those that have and those that haven’t seen one, posting here and elsewhere on the forums.


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Does it matter, because if they are listing either as native, then it is complete fiction.

No it doesn’t matter. What matters is the final end resultant image you watch for the highest percentage of time you’re watching it, and with that in mind the LK970 is arguably the greatest value in projectors at the moment!

Any time anyone wants to fly me over to set one up and compare it to their projector that streets for 3-4 times as much, let me know.

I can’t wait for the LK990!
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post #19 of 88 Old 12-31-2018, 01:36 PM
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It would only be a mistake if ALL you care about is the lowest black levels and nothing else.
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode. I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7.

JVC says their input lag is between 25ms and 37ms, which is good enough for me. I've looked at the Optoma UHZ65 a few months ago when I was first considering projectors, but it gets 80ms at best. I'm seeing reports that the LK970 hits 50ms, which is well above my tolerance threshold.

Man... why can't everything be 16ms like the BenQ HT2050A
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post #20 of 88 Old 12-31-2018, 01:56 PM
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Originally Posted by wombats View Post
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode. I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7.

JVC says their input lag is between 25ms and 37ms, which is good enough for me. I've looked at the Optoma UHZ65 a few months ago when I was first considering projectors, but it gets 80ms at best. I'm seeing reports that the LK970 hits 50ms, which is well above my tolerance threshold.

Man... why can't everything be 16ms like the BenQ HT2050A
It seems that you've already made up your mind. Let us know how you like the NX7.
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post #21 of 88 Old 12-31-2018, 02:00 PM
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BenQ LK990

Quote:
Originally Posted by wombats View Post
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode........
These are designed for places like museums and more commercial spaces, so gaming features like input lag aren’t a priority. I don’t game so can’t really reply here on that, but I think @tnaik4 does.


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.......I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7........
This is where I think you’re going off track. I personally don’t believe you’ll be giving up superior picture quality, other than maybe better total black levels (not shadow details) and slightly smaller color gamut (maybe, don’t know yet).

The picture quality on HDR movies and sports that aren’t compressed all to Hell at the source are simply jaw dropping on the BenQ LK970 (and presumably even better on the upcoming LK990). I couldn’t believe how amazing and real NFL football looked on mine this weekend. It was seriously so real and like I was standing on the field with them! Closest thing to my LG C8 OLED for sports and HDR I’ve seen, total blacks not withstanding of course.
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Last edited by Dave Harper; 12-31-2018 at 02:05 PM.
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post #22 of 88 Old 12-31-2018, 02:24 PM
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Originally Posted by Aztar35 View Post
It seems that you've already made up your mind. Let us know how you like the NX7.
This is my first projector purchase. I can cancel my pre-order at any time or return the NX7 within a few days of receiving it if it does not meet my needs. I certainly would love the extra brightness from the LK990 and the 120hz 1080p capability. I just need to be confident to make the switch. Several factors go into into my decision and black levels happen to be one of them. It's not a show stopper for me if I don't get D-ILA quality contrast and black levels, but considering the NX7 meets my requirements in every way (on paper and via word of mouth) I would need a good reason to switch over to the LK990 or LK952. I'm searching for that reason.

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These are designed for places like museums and more commercial spaces, so gaming features like input lag aren’t a priority. I don’t game so can’t really reply here on that, but I think @tnaik4 does.
That's a real shame. The 120hz 1080p feature and the fact that it has a no-fuss laser light source make this projector perfect for gaming and other low-latency applications. If they put in a low latency mode and got down to 40ms at least, it would be great!
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post #23 of 88 Old 12-31-2018, 03:35 PM
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Originally Posted by Dave Harper View Post
It would only be a mistake if ALL you care about is the lowest black levels and nothing else.
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode. I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7.

JVC says their input lag is between 25ms and 37ms, which is good enough for me. I've looked at the Optoma UHZ65 a few months ago when I was first considering projectors, but it gets 80ms at best. I'm seeing reports that the LK970 hits 50ms, which is well above my tolerance threshold.

Man... why can't everything be 16ms like the BenQ HT2050A <img src="http://afterconvert.com/forum/images/AVSForum/smilies/tango_face_smile_big.png" border="0" alt="" title="Laugh" class="inlineimg" />
I m an intense gamer, i play all kind of games on ps4 and mainly high end PC but not much multiplayer lately, but the game i m playing now on the lk970 is darksiders 3 and it requires fast reflexes in dodges and timing to have a chance on the hardest difficulty which is very tough, and i find no issues whatsoever with it, i dont know the correct input lag but i have no problem at all playing all kind of games on it, for gaming this projector is king, the dlp/great lens shaprness is literally like a flat panel add to it the brightness and colors and u have an excellent picture.
Keep in mind though i couldnt get 1080p 120hz to feel smoother than 60hz, i have a 100hz monitor and i notice instantly the smoothnes of it compared to 60hz but on the benq is just feels the same, i did some blurbusters test and its just same as 60hz, dont know if the lk990 fixed this.

But for some reason the motion of the dlp on 60hz is really smooth, its better than my oled or monitor at that, it really feels like 80-90hz and that is great for gaming.

JVC DLA X590/RS440
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post #24 of 88 Old 12-31-2018, 05:07 PM
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Originally Posted by wombats View Post
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode. I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7.

JVC says their input lag is between 25ms and 37ms, which is good enough for me. I've looked at the Optoma UHZ65 a few months ago when I was first considering projectors, but it gets 80ms at best. I'm seeing reports that the LK970 hits 50ms, which is well above my tolerance threshold.

Man... why can't everything be 16ms like the BenQ HT2050A
Although i have no doubt the Benq LK990 is a great projector, i would wait, and actually i'm waiting for the Benq L6000, which seems to be pretty much the Home Theater version of the LK990 (The user manual is the same for both, same chassis, etc..). A little bit less lumens (4200 vs 6000), but 100% coverage of DCI-P3. I think the L6000 is going to be a hard one to beat:

http://www.av269.com/2018/1226/2663.shtml
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post #25 of 88 Old 12-31-2018, 06:09 PM
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Originally Posted by tnaik4 View Post
...i find no issues whatsoever with it, i dont know the correct input lag but i have no problem at all playing all kind of games on it, for gaming this projector is king, the dlp/great lens shaprness is literally like a flat panel add to it the brightness and colors and u have an excellent picture.
I'm afraid I'm a bit difficult to please. I play on a monitor that has nearly no signal processing and has an average 4ms of input lag. http://www.tftcentral.co.uk/reviews/...b270hu.htm#lag The Mitsubishi HC7800D that I'm currently borrowing from a friend has an average 60ms of input lag (tested compared to the XB270HU screen) and it is just barely ok for me. The LG HU80KA laser projector gets 80ms average in low latency mode and I saw a reviewer say that it was "very playable." I don't doubt his opinion or your experience either, I just know I'm picky and I would need to see hard tested numbers to be confident in the BenQ lineup.

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Originally Posted by tnaik4 View Post
Keep in mind though i couldnt get 1080p 120hz to feel smoother than 60hz, i have a 100hz monitor and i notice instantly the smoothnes of it compared to 60hz but on the benq is just feels the same, i did some blurbusters test and its just same as 60hz, dont know if the lk990 fixed this.
That's really strange because I read the LK970 manual just now and it lists 1080p 120hz as a supported input resolution. Why would they accept 120hz as input and not actually display it?

They also have a "reduce blanking" mode where I assume they insert a black frame between each frame at 60hz to reduce motion blur. That would be pretty cool to try out.

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Originally Posted by ailil View Post
Although i have no doubt the Benq LK990 is a great projector, i would wait, and actually i'm waiting for the Benq L6000, which seems to be pretty much the Home Theater version of the LK990 (The user manual is the same for both, same chassis, etc..). A little bit less lumens (4200 vs 6000), but 100% coverage of DCI-P3. I think the L6000 is going to be a hard one to beat:

http://www.av269.com/2018/1226/2663.shtml
I'll keep my eyes on the L6000. I was wondering what was up with that because the user manual for the LK990 applies to the L6000 as well according to the manual cover. Interesting.

Thank you both for your information. I might have to get my hands on both projectors somehow and do a shootout at some point. Maybe I'll borrow somebody's Sony as well for good measure.

Last edited by wombats; 12-31-2018 at 06:16 PM.
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post #26 of 88 Old 12-31-2018, 06:26 PM
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Originally Posted by wombats View Post



That's really strange because I read the LK970 manual just now and it lists 1080p 120hz as a supported input resolution. Why would they accept 120hz as input and not actually display it?
you have to create custom resolution to be able to select 120hz, its not available by default. i tried a lot of EDIDs and tried many timings with custom resolution it just didnt feel like 120hz and not any different than 60hz although it says in the manual that 1080p 120hz is supported so no idea why its not any smoother.

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post #27 of 88 Old 12-31-2018, 11:12 PM
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Originally Posted by wombats View Post
What about input lag? How is it on the LK970? I can't find official numbers anywhere and the manuals for all of these LKxxx models don't hint at any low latency mode. I was very happy to see that the new LK990 and LK952 both are capable of 120fps at 1080p, which is a feature I really want and is tempting me to give up the superior movie and picture quality of the JVC NX7.

JVC says their input lag is between 25ms and 37ms, which is good enough for me. I've looked at the Optoma UHZ65 a few months ago when I was first considering projectors, but it gets 80ms at best. I'm seeing reports that the LK970 hits 50ms, which is well above my tolerance threshold.

Man... why can't everything be 16ms like the BenQ HT2050A
I think if you follow this forum, you'll get stuck with 'black' is the ONLY variable in picture quality mentality... I also did for years... because that's what everyone talks about... No doubt, black is the single most important factor for bringing out the colors and details of ANY displays and that's why OLEDs are still the best TVs.. but what people don't tell you is that Projectors, unlike TVs aren't bright enough. So, when you have something that isn't bright enough, then LUMENS takes over as the single MOST important variable in picture quality. For instance, if you have an OLED tv side by side with the newest Samsung quantum dot display, even though the quantum dot is far brighter, the OLED would still beat it in picture quality simply because of it's pure black floor to begin with.. but the OLED already is Bright ENOUGH... now, imagine if your projector isn't bright enough, no matter how deep your blacks are, the colors are just dull and won't be popping..

I actually stumbled onto this fact when i decided to test out a 1.8 gain screen in my 10 feet wide screen. Before I switch out my AT 1.0 screen, i thought the picture I was getting from my Sony 500ES projector (which is probably throwing out 1500 lumens) were good enough... But after replacing it with the 1.8 gain screen, WOW, suddenly everything is popping.. Colors came out like crazy... red became bright red instead of maroon like.. colors were luminence... and not dull... light source in movies like torchlight, street lamps, signboards actually looked like 'light sources' instead of just brightly colored 2d images... there is a 3Dish to the picture because now the dynamic range have extended between the brightest object and the least bright object...

I can tell you this also, I have auditioned both the N5 and the NX9... the NX9 were shown on a 200 inch 1.0 AT screen and the N5 were shown on a 120 inch 1.6 gain screen. Anyone who looked at those two projectors would instantly think the NX9 were an inferior projector.. because it just didn't have enough light to light up the 200 inch screen. the N5 had just enough for the 120 inch with 1.6 gain. Any bigger and you'll lose all the picture quality...

So, if you intend to have a bigger screen like a 10 feet wide or above, and unless you're getting like a 1.8 gain screen, the N7 just wouldn't cut it... even with it's superior black floor, the image would still be washed out...

You need first and foremost the LUMENS to get you to at least 70 foot lamberts or beyond (to properly do HDR), and maybe even higher to do 3D... i suggest even in a bat cave, you need 40 lumens and above for SDR to start seeing the true pop of an image... once you see what true pop looks like you'll never go back... you can forgive a lot of things like 'black foor', 'shimering from higher gain screens', etc, etc... because the image improvments is really night and day...
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post #28 of 88 Old 12-31-2018, 11:17 PM
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Originally Posted by ailil View Post
Although i have no doubt the Benq LK990 is a great projector, i would wait, and actually i'm waiting for the Benq L6000, which seems to be pretty much the Home Theater version of the LK990 (The user manual is the same for both, same chassis, etc..). A little bit less lumens (4200 vs 6000), but 100% coverage of DCI-P3. I think the L6000 is going to be a hard one to beat:

http://www.av269.com/2018/1226/2663.shtml
I bet it is exactly the same projector but with the color space tuned to DCI-P3 squeezing out the light output for color accuracy...

So, basically what this means is that anyone who knows how to configure the LK990 may be able to squeeze out the same color but losing 1800 lumens... unless, Benq had to put in some sort of filter to get that DCI-P3
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post #29 of 88 Old 01-01-2019, 08:52 AM
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Any time anyone wants to fly me over to set one up and compare it to their projector that streets for 3-4 times as much, let me know.

I can’t wait for the LK990!
Dave... with such nice lumen output, if using the lk990 or future l6000, would a filter be used to dial in performance for a smaller 115" size screen?

Id love to see either if these units in action.
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post #30 of 88 Old 01-01-2019, 09:05 AM
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I bet it is exactly the same projector but with the color space tuned to DCI-P3 squeezing out the light output for color accuracy...

So, basically what this means is that anyone who knows how to configure the LK990 may be able to squeeze out the same color but losing 1800 lumens... unless, Benq had to put in some sort of filter to get that DCI-P3
They probably added a yellow notch filter to the L6000 to get 100% DCI P3
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