BenQ LK970: 4K DLP, laser, $12,999k MSRP - Page 86 - AVS Forum | Home Theater Discussions And Reviews
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post #2551 of 2564 Old 09-18-2019, 12:26 PM
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Originally Posted by silver700 View Post
Thank you for the very helpful info. Do you use a lumagen with your 970?
I use an HTPC with MadVR and also did a 3Dlut calibration(SOWK and Sirmaster did that for me). The 3Dlut really helped with some of the colors.

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BENQ LK970, 180"(195.4" Diagonal) Wide curved Seymour 2.37:1 XD W/UH480 lens/Marantz 8802A/Outlaw Amps 7900/5000, 7.2.4 set up / 8 - MT110SR's / Dual T-18's/HTPC/MadVR
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post #2552 of 2564 Old 09-18-2019, 02:52 PM
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Originally Posted by SteveFred View Post
I use an HTPC with MadVR and also did a 3Dlut calibration(SOWK and Sirmaster did that for me). The 3Dlut really helped with some of the colors.

Oh ok. I need to find someone that can calibrate my 970 that has experience with a Lumagen since I will be adding that shortly. I do notice, that without calibration, the 970 exhibits weird colors on certain scenes which may be due to it not being calibrated. For example, on a scene with white clouds, i see weird blue colors or "box" pixels are over the white cloud, but no where else. I can only assume that a Lumagen and calibration would fix that. Everything else about this projector is fantastic, save for maybe the greyish black starfields.
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post #2553 of 2564 Old 09-18-2019, 07:02 PM
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Did anyone ever post a rec709 calibrated lumen reading for eco and normal modes? All I could find was bright lol.

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post #2554 of 2564 Old 09-19-2019, 03:36 AM
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Hey Tim, what do you consider calibrated ? Their are only a few guys to my knowledge that have full calibrations. Even then I am not sure what type of De values they are getting. With the 970 you should be in the around 2700 lumens in eco mode and 3600 in normal mode.


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Did anyone ever post a rec709 calibrated lumen reading for eco and normal modes? All I could find was bright lol.
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post #2555 of 2564 Old 09-19-2019, 06:26 AM
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Hey Tim, what do you consider calibrated ? Their are only a few guys to my knowledge that have full calibrations. Even then I am not sure what type of De values they are getting. With the 970 you should be in the around 2700 lumens in eco mode and 3600 in normal mode.
Yes, I would not calibrate that projector to a de of less than 3. People would be shocked at the light loss.
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post #2556 of 2564 Old 09-19-2019, 06:52 AM
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Originally Posted by 12GAGE View Post
Hey Tim, what do you consider calibrated ? Their are only a few guys to my knowledge that have full calibrations. Even then I am not sure what type of De values they are getting. With the 970 you should be in the around 2700 lumens in eco mode and 3600 in normal mode.


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Did anyone ever post a rec709 calibrated lumen reading for eco and normal modes? All I could find was bright lol.
Well good point. I guess the standard blue filter hue and saturation adjustment, brightness and contrast adjustments.

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post #2557 of 2564 Old 09-19-2019, 07:13 AM
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I calibrated a LK970 and it was about 2000 lumens with the laser at 100%.
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post #2558 of 2564 Old 09-19-2019, 08:22 AM
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That is a good data point, as Mike stated you could loose a lot of lumens based on calibration. These units are still pretty bright but they are not known for their color accuracy. Brilliantcolor also plays havoc with calibration. I think BC is a bit more tamed on the 970, but I believe it to still be there.

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I calibrated a LK970 and it was about 2000 lumens with the laser at 100%.
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post #2559 of 2564 Old 09-19-2019, 10:03 AM
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I calibrated a LK970 and it was about 2000 lumens with the laser at 100%.
Was your calibration a little more involved than just contrast and brightness controls and hue and saturation? Did you go into grey scale and deeper?

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post #2560 of 2564 Old 09-19-2019, 10:13 AM
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Was your calibration a little more involved than just contrast and brightness controls and hue and saturation? Did you go into grey scale and deeper?
Yes.

First I used the RGB gain controls to white balance 100% white. This is where nearly all the brightness is lost. I had to bring green down quite a bit to reach a balanced 6500K color temp.

After that I used a full 3DLUT to do the main calibration. The 3DLUT takes care of the full greyscale white balance, gamma curve, and color. I calibrated to flat 2.2 gamma.

At the end I double checked the brightness and contrast to make sure the lowest levels of black and highest levels of white were not being clipped.
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post #2561 of 2564 Old 09-19-2019, 10:22 AM
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Quote:
Originally Posted by TimHuey View Post
Was your calibration a little more involved than just contrast and brightness controls and hue and saturation? Did you go into grey scale and deeper?
Yes.

First I used the RGB gain controls to white balance 100% white. This is where nearly all the brightness is lost. I had to bring green down quite a bit to reach a balanced 6500K color temp.

After that I used a full 3DLUT to do the main calibration. The 3DLUT takes care of the full greyscale white balance, gamma curve, and color. I calibrated to flat 2.2 gamma.

At the end I double checked the brightness and contrast to make sure the lowest levels of black and highest levels of white were not being clipped.
Wow you wouldn't think just getting red blue and green correct would cut the lumens that much. So when you corrected everything is there a memory setting you can store them in for viewing with those settings? Or do you have put them all back in again after watching something during daylite room hours with settings for that condition that may not have as accurate colors.

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post #2562 of 2564 Old 09-19-2019, 10:31 AM
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Originally Posted by TimHuey View Post
Wow you wouldn't think just getting red blue and green correct would cut the lumens that much. So when you corrected everything is there a memory setting you can store them in for viewing with those settings? Or do you have put them all back in again after watching something during daylite room hours with settings for that condition that may not have as accurate colors.


You can have different settings per picture mode and switch between them.

But his room is a theater with no light.
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post #2563 of 2564 Old 09-19-2019, 11:27 AM
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Originally Posted by SirMaster View Post
Yes.

First I used the RGB gain controls to white balance 100% white. This is where nearly all the brightness is lost. I had to bring green down quite a bit to reach a balanced 6500K color temp.

After that I used a full 3DLUT to do the main calibration. The 3DLUT takes care of the full greyscale white balance, gamma curve, and color. I calibrated to flat 2.2 gamma.

At the end I double checked the brightness and contrast to make sure the lowest levels of black and highest levels of white were not being clipped.
This is exactly what I was talking about. The projector has a lot of brightness, until you do a full calibration. When doing that, it loses a ton of light output. If you have a large screen, you are going to have to give up some accuracy.
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post #2564 of 2564 Old 10-01-2019, 10:57 AM
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On the topic of bright projectors for large screens, anyone know anything about the Epson Pro L1100U?

6000 lumen
laser
4K pixel shift
dynamic iris and I believe laser dimming.

On sale for $3350 until end of the year. Anyone willing to try one?

https://epson.com/Clearance-Center/P...p/V11H735020-N

Last edited by SirMaster; 10-01-2019 at 11:03 AM.
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