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Search: Keyword(s): ; Posts Made By: Light Illusion
Forum: High Dynamic Range (HDR) & Wide Color Gamut (WCG)   08-25-2016, 01:15 AM
Replies: 9
Views: 357
Posted By Light Illusion
Will this work? ...

Will this work?
http://www.avsforum.com/forum/139-display-calibration/2463698-r-masciola-s-hdr-10-uhd-test-patterns.html

We do not use discs ourselves, as we would use the SIX-G (or soon the...
Forum: Display Calibration   08-15-2016, 12:11 PM
Replies: 149
Views: 17,307
Posted By Light Illusion
As a UK based operation, I doubt it :D See:...

As a UK based operation, I doubt it :D
See: http://www.lightillusion.com/index.html

Steve
Forum: Display Calibration   08-15-2016, 11:41 AM
Replies: 149
Views: 17,307
Posted By Light Illusion
As a colourist and developer of LightSpace CMS, I...

As a colourist and developer of LightSpace CMS, I obviously have access to 10 bit/12 bit Rec709/P3/Rec2020 SDR material and displays.
I have multiple such setups in my home...
10 bit P3 is far...
Forum: Display Calibration   08-15-2016, 10:57 AM
Replies: 149
Views: 17,307
Posted By Light Illusion
HDR is an interesting concept, but unfortunately...

HDR is an interesting concept, but unfortunately has been ill thought out, and poorly implemented.
I much prefer a well setup SDR display, with well graded material.
No variable light levels (ABL...
Forum: Display Calibration   08-15-2016, 08:43 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Sorry - yes, I forgot that! So yes, it should...

Sorry - yes, I forgot that!
So yes, it should work for that application :D

Steve
Forum: Display Calibration   08-15-2016, 07:54 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Without the HDR flag the display may not enter...

Without the HDR flag the display may not enter HDR mode at all...

:(
Forum: Digital Hi-End Projectors - $3,000+ USD MSRP   08-15-2016, 06:26 AM
Replies: 831
Views: 30,275
Posted By Light Illusion
Here is a simple workflow that will help define...

Here is a simple workflow that will help define the issues with BT1886.

The colourist grades on a display with dark blacks using BT1886, so basically using a power law 2.4 gamma.
As the black are...
Forum: Display Calibration   08-15-2016, 05:23 AM
Replies: 149
Views: 17,307
Posted By Light Illusion
To quote ITU-R BT.2390-0 And ITU-R ...

To quote ITU-R BT.2390-0

And ITU-R BT.2100-0
Steve
Forum: Digital Hi-End Projectors - $3,000+ USD MSRP   08-15-2016, 05:03 AM
Replies: 831
Views: 30,275
Posted By Light Illusion
Actually, no. I do not agree with that. If you...

Actually, no. I do not agree with that.
If you follow what I said above, different mastering displays with different black levels will produce different results when calibrated to BT1886.
If you...
Forum: Digital Hi-End Projectors - $3,000+ USD MSRP   08-15-2016, 04:50 AM
Replies: 831
Views: 30,275
Posted By Light Illusion
As our main market is the professional film and...

As our main market is the professional film and TV industry we have a lot of dealings with grading facilities and studios, etc.
(I am also a colourist by trade - or rather was, as I haven't grade a...
Forum: Display Calibration   08-15-2016, 03:28 AM
Replies: 557
Views: 21,299
Posted By Light Illusion
I've been thinking the mastering display colour...

I've been thinking the mastering display colour coordinate requirements through further, and have concluded my first comments are incorrect.

The grading display metadata for the RGB peak colour...
Forum: Display Calibration   08-15-2016, 02:56 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
The whole field of HDR (UHDTV) consumer...

The whole field of HDR (UHDTV) consumer calibration is so messed-up as to be virtually unusable.
Different display manufacturers perform their internal calibration in different ways.
There is no...
Forum: Display Calibration   08-14-2016, 02:08 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Theatrical HDR projection is a very different...

Theatrical HDR projection is a very different animal to 'Consumer HDR'.
It uses propitiatory projection, with film masters graded specifically for that projection.

All consumer HDR is based on TV...
Forum: Display Calibration   08-14-2016, 12:51 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
With LightSpace there is never just 'one...

With LightSpace there is never just 'one solution'.
We provide a set of tools that can be applied in different ways.
With tone mapping you will be able to use the LUT Manipulation tools to generate...
Forum: Display Calibration   08-13-2016, 02:59 PM
Replies: 149
Views: 17,307
Posted By Light Illusion
HDR is actually not ideal for bias lighting... ...

HDR is actually not ideal for bias lighting...

See: http://www.hdtvtest.co.uk/news/4k-vs-201604104279.htm

All our tests show that shadow detail can/will get wiped out by room illumination,...
Forum: Display Calibration   08-13-2016, 02:51 PM
Replies: 521
Views: 19,322
Posted By Light Illusion
What you would really need to do is use the...

What you would really need to do is use the 'Parametric Gamma' function within LightSpace to develop your own re-mapping profile.
Using that approach you can generate any shape tine map you want,...
Forum: Display Calibration   08-13-2016, 06:27 AM
Replies: 557
Views: 21,299
Posted By Light Illusion
All that would be ok, if the display was capable...

All that would be ok, if the display was capable of being accurately calibrated to P3 - few are.
For example, this is a profile of a professional P3 grading display's gamut as used for grading just...
Forum: Display Calibration   08-13-2016, 06:05 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
'Film' only went to 48 nits. That was/is the...

'Film' only went to 48 nits.
That was/is the standard for film projection.
The film negative captured/captures approx. 14 stops, which is basically the same as today's digital cameras.
That cannot...
Forum: Display Calibration   08-12-2016, 06:37 AM
Replies: 557
Views: 21,299
Posted By Light Illusion
In the professional grading world there are two...

In the professional grading world there are two different approaches to UHDTV grading.
(As well as developing LightSpace CMS, I am a credited colourist - although I've not graded a film for a few...
Forum: Display Calibration   08-11-2016, 03:48 PM
Replies: 557
Views: 21,299
Posted By Light Illusion
What is really worrying is all the chromaticity...

What is really worrying is all the chromaticity coordinates state the exact same colour same values...
No two displays are ever that identical, unless they are calibrated just about every day -...
Forum: Display Calibration   08-09-2016, 11:08 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
As there is no standard fro projection HDR it...

As there is no standard fro projection HDR it really is the Wild West - and normal HDR is not much better...
This will likely be an ongoing development as new ideas emerge and get adopted.

Until...
Forum: Display Calibration   08-09-2016, 04:54 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Ah - I just noticed in your example you were...

Ah - I just noticed in your example you were using Rec709 Gamut (ST2084_Rec709).
I used Rec2020 gamut...

What colour space is your source?

Steve
Forum: Display Calibration   08-09-2016, 04:51 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Sounds like your profile data may be inaccurate. ...

Sounds like your profile data may be inaccurate.
Send me the profile to look at - steve(at)lightillusion.com

Steve
Forum: Display Calibration   08-08-2016, 01:51 PM
Replies: 2
Views: 132
Posted By Light Illusion
The reality is there is actually no HDR...

The reality is there is actually no HDR specification for projection...
Those companies that have HDR settings for projectors are basically using a 'frig' to modify the HDR specification to a lower...
Forum: Display Calibration   08-08-2016, 10:48 AM
Replies: 521
Views: 19,322
Posted By Light Illusion
Hi Peter, We are still working on the...

Hi Peter,

We are still working on the Lumagen HDR implementation - it should be complete in a couple of weeks.
With regard to how LightSpace works with HDR there is some info in the LUT...
Showing results 1 to 25 of 944

 
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