I see… interesting… didn’t know it is different , thought they have the same firmware so assumed it should be the same
So when u calibrate for expert dark, ddc reset, all your inputs 1,2,3 all wiped out to blank ?
Mine the AU810PB doesn’t do that. It only wipes out for input 2 that I’m calibrating only… so my Oppo on input 2, has its own calibrated settings and Xbox on input 3 retains its setting , both on expert Dark modes for SDR , both on hdr game mode for hdr … they retain their individual calibrated settings on the pj
Yes. The different inputs may look different because it doesn’t reset many of the picture processing options for each input. But it definitely wipes out the 3D LUT for all inputs. Autocal loads it back up. So, for me, each picture mode can have a different 3D LUT, but not each input.
Interesting, yesterday I calibrated a tcl tv, it was the same. The inputs have no relationship. They are all independent of each others. A calibrated input hdmi 1, is not the same as calibrated vide usb port
Did the TCL TV have the ability to load a 3D LUT? Most LG have ability for each input to have different picture processing eg iris, brightness, contrast etc. But 3D LUT is by picture mode
I think better for those who own the LG projector to check and confirm yourself, personally I have confirmed it doesn’t Apply to all inputs, at least on the AU810PB model
It should be pretty easy to test and confirm, just do one BT1886 on input 3 and then gamma 2.4 on input 2, u will know the answer.
Another way is if calibration is complete, can always to a quick verification on that input that’s not calibrated to see if values change or not
Back in March or so of this year, when I was playing with PGenerator, I had the same idea you had that each input for each picture mode could be calibrated independently. However @Foodie corrected me that Autocal applies to all inputs. At the same time I had asked the question on AVS and was told the exact same thing that Foodie told me. I checked on my HU810 and indeed they were right. So, long ago, I confirmed this already… at least with my projector.
As I mentioned before, all three inputs HDMI1, 2 and 3 are greyed out, even though I didn’t calibrate any of them specifically. I just calibrated USB. They all look like this
I’m not sure how you managed to get a different gamma into two different inputs on the same mode because for my version of Calman, which is more current, it does a dcc reset every time you Autocal that wipes out the 3D LUT for all inputs in the same mode . Perhaps your AU810 has more memories? I only paid S$2.5k for my HU810
As I mentioned before, Expert Dark is calibrated with the internal TPG, while the other modes like Cinema are calibrated with an external TPG connected to the HDMI port. When you use an external TPG, you don’t need the USB stick as the PJ is already being put into the right mode by the pattern generator itself. When you started using Calman with your projector, it was before Tyler had created a proper workflow for it. When he created the workflow later, and especially for the newer version of Calman, it involved the use of the files on USB.
That sounds correct, that means on your model it is loading the look up tables on all the inputs simultaneously. And also doing ddc reset on all inputs simultaneously. Where as on the AU810PB models, they are independent of each other , including the usb ports
Having said that , With the AU810PB models, the source player (ie Xbox, oppo205, zidoo,laptop) having different graphics are taken into consideration during the caibration process . That means the grayscale tracking will follow what was set up within the source player’s brightness and contrast settings , which is much more accurate as the source player is now part of the “chain” in the calibration process. the usb option doesn’t cater for that as it assumes all players connected to the projector are the same
Actually come to think about it, if u guys have an Xbox series X on input 1, then Oppo 205 on input 2, maybe a Pc madvr on input 3, they all have different graphics/ video card , so when calibrating to usb, it uses the Pj video card, does the image look the same on 3 different inputs with multiple sources having multiple different video cards ?
All of my calibration now is with an external pattern generator, which is verified bit perfect, unlike LG’s. When using an external pattern generator, you connect it to a HDMI port and don’t use the USB drive.
I’ll try to explain because this was actually explained to me by the author of Lightspace, a Calman competitor: The USB pattern or Xbox or Oppo has no bearing on the final calibration at all. It’s just used to put the LG projector into the appropriate mode - HDR or SDR. The LG’s internal pattern generator works in RGB as an overlay over the incoming video, similar to how an LG’s On Screen Display or OSD works. That way, the colorimeter is simply reading a pattern generated by the internal TPG and is not reading the incoming signal from USB, Oppo etc at all. Hence the input makes no difference when using the internal TPG.
It’s different when using an external TPG like Murideo, Video Forge or Pgenerator, the colorimeter reads what is coming into the projectors HDMI port. The external TPG is also responsible for putting the projector into the appropriate mode. Once you tell Calman what TPG you are using and provide it the IP address, Calman takes control.
For MadVR, after you calibrate your projector, you tell MadVR that it is calibrated and what it is calibrated to - in my case SDR 2020 - MadVR takes over from there and everything looks perfect. After you calibrate with Calman, you can also use the free Displaycal to generate a 3D LUT file from your Calman calibration and load that into MadVR. That way, you can save your calibration, which is something you can’t do with LG. I have been planning to do that, but have not done that yet.
how do u know the LG pattern generator is not bit perfect ? Is this claim coming from light space ? Can you quote the source ? Also does it make a difference to the eye post calibration using light space’s pg vs LGs?
what happens then when your Xbox has brightness settings of 50 measuring “x” nits vs oppo having brightness “y” nits. The different video card will not have an impact to calibrated reference at “Z” nits without the 2 source ? At time of calibration, the pj won’t know. But if I playback my Blu-ray Disc through Oppo and Xbox, the signal will have this adjusted Luminance . Is that not the case ? Similarly for laptops, now when I play back on hdmi 3, they all have different brightness settings on the source player, No ?
The AVS people, not just Ted, the author of Lightspace have done extensive tests on these pattern generators. I have no way of verifying. However Ted has no reason to denigrate LG’s pattern generator because Lightspace works with it and just about every other pattern generator on the market. He just suggests that you use a bit perfect one. One interesting thing to note is that the expensive Murideo pattern generator was also not bit perfect until recently, so all the pro calibrators that bought their expensive Murideos were not getting perfect patterns. The AVS people helped to point this out, which led to Murideo fixing it.,
As far as I know, the RGB overlay from the internal pattern generator obliterates anything from the incoming signal. Its like having an OSD that completely covers the screen so nothing is left. For example, I don’t think the LG’s OSD brightness or otherwise is affected by what ever the input video is doing
Interesting, I wasn’t aware of it either, thanks for pointing out… I have time these few days, so I can hop on to check it out and how that impacts the calibration
LG iTPG is bit perfect for certain models only. Have to check with LG and also verify with the AVS forum calibrators if it is the case for the LG AU810.
The info on avs is sometimes confusing because the author dont specify if certain things are meant for which models. Eg if the iTPG is bit perfect on certain models. For my oled, i am lucky that the iTPG is bit perfect and verified by AVS calibrators.
In any case, you would want an external pattern generator to calibrate things other than LG although you would have to buy the full version of Calman, which his expensive. Even if the display can’t be controlled by Calman, it would still be faster than using patterns on a disc. Ted has patterns on a disc for $20 that can be used to verify calibrations.
The PGen is a good investment. Gives u bit perfect patterns across displays! And, some feedback that the speed of calibration is faster compared to LG iTPG.
