Display Calibration

[chros]

Originally Posted by Damien147

it needs some time to get used to it.

Yes, but it will be only days Especially if you created a 3dlut for it/them.

[Damien147]

I don't have a calibration device to do that.
I am using another guy's TV settings that calibrated in bt.1886 and know some values in cd/m^2 for backlight.I know that each calibration is unique but these settings look better than default.
I've got a cheap 6 series Samsung with good contrast,still don't know if it's worth it giving 1/3 of its price for a colormunki display.(or it pays you back?I watch 3-5 movies during the night at winter)
Back to our subject ~120 nits to match my monitor doesn't sound bad.I tried it yesterday and I think I am gonna settle like this.

[huhn]

how do you even set the brightness of a device without having a measuring device.

[Damien147]

Wasn't planning 100% accuracy,just copied measurements but long story short I found a colormunki display in a more logical price and ordered it to measure things myself.

[chros]

Originally Posted by Damien147

Wasn't planning 100% accuracy,just copied measurements but long story short I found a colormunki display in a more logical price and ordered it to measure things myself.

You can buy those colormunki/id3pro devices second hand as well, it would be cheaper.

[Damien147]

I think it's hard to find something like that second hand in Greece.
225 euro(256 usd) was the first price I've seen for a colomunki display and said no.After some googling yesterday I found it at 150 euro(171 usd) and said why not(?)
Got some reading to do now,the only thing I know is that I have to use displaycal.

[huhn]

they nearly doubled in price in the last past years.

and i'm not a huge friend of used colorimeter they drift and the i1d3 is out for a long long time now.

[Damien147]

They translate 100 euro to 100 usd usually here(...and sometimes if you are lucky enough..).

[chros]

Originally Posted by huhn

and i'm not a huge friend of used colorimeter they drift

I don't think that a colorimeter can drift in time, a spectrophotometer can (includes some gas in it), I think we talked about this about 3 years ago
E.g. on UK ebay.

[huhn]

colorimeter are known to drift.
http://www.spectracal.com/downloads/...olorimeter.pdf

the i1d3 is supposed to be far more stable than older device but it will still drift.

[chros]

Originally Posted by huhn

colorimeter are known to drift.
http://www.spectracal.com/downloads/...olorimeter.pdf

the i1d3 is supposed to be far more stable than older device but it will still drift.

Oh, ok, so it can. i1d3 has sealed filters so it should drift less than others that don't.

[Damien147]

~30cm next and ~30cm behind the TV I have my monitor facing the same direction.Is it ok to have my monitor on and use it while calibrating the TV?

[huhn]

if your meter is directly on the screen ambient light shouldn't matter much.

[chros]

Originally Posted by Damien147

~30cm next and ~30cm behind the TV I have my monitor facing the same direction.Is it ok to have my monitor on and use it while calibrating the TV?

You can turn its brightness down to minimum if you don't want to turn it off.

[Damien147]

That makes sense,thanks guys.
Meter is gonna take some time to come because there is no availability.Till then I am trying to learn as much as I can to start straight away.

[Damien147]

When creating an HDR to SDR lut for madvr you have to put tone curve in calibration tab to gamma 2.2?

[huhn]

you select "as measured" the option under this tab are not important for the 3D LUT.

[Damien147]

I've seen gamma 2.2 being mentioned for hdr randomly and probably misunderstood it.I did it right then,just changed target peak nits.Thank you.
Did my first calibration yesterday.TV's PC mode and monitor went fine but failed at regular TV calibration for channels.Specifically with HCFR and primaries and secondaries.
I opened a 75% test pattern and tried to set R G B in HCFR to 100% but it doesn't work.Can someone correct me what to do?

[huhn]

your SDR 3D LUT "needs" to be gamma 2.2 when madVR is doing the HDR->SDR conversation but that doesn't count for a HDR->SDR 3D LUT it will take care of the gamma problem on it's own.

[Damien147]

I see,all good then.Thanks again.