CurtPalme.com Home Theater Forum

kjkjk · Joined: 04 Nov 2017 Posts: 4

Problem with blue color in OLED How to tune?

attaching 2 images

1. a picture shows that the blue can be seen from black to blue from level 6
when the rest of the colors start at level 1

2. you can not increase the brightness of the screen, because the bright colors lose details
in picture 2

http://oi63.tinypic.com/jheexg.jpg

http://oi63.tinypic.com/u4lt1.jpg

**kal** · Posted: Sun Nov 05, 2017 1:22 pm Post subject:

You need to do a proper calibration of the display. To do this you need calibration software and a meter. I recommend ChromaPure with the Display 3 PRO - it's by far our most popular package: http://www.curtpalme.com/ChromaPure_EyeOneDisplay3.shtm

Then to calibrate follow our guide: https://www.curtpalme.com/forum_archived/viewtopic.php@t=35322.html
It'll walk you through step by step.

Good luck and welcome to the forum!

Kal

kjkjk · Joined: 04 Nov 2017 Posts: 4

All you do is sell me a product that has nothing to do with my problem!

**kal** · Posted: Sun Nov 05, 2017 5:53 pm Post subject:

No, that would be incorrect.

You are assuming you have a problem because blue output appears reduced below level 6 in your screenshot, but that's not necessarily correct. It's the total response (greyscale/gamma) that matters. That's where the tools I recommend come in. It's the only way to correct set your colours. You may not even have a problem at all. How do steps from 0 to 100 IRE white look?

Turning up blue on the low end to match the others may completely throw off your greyscale. Blue response to our eyes is different from others because of the differences in wavelength, so the answer isn't to get them to all look the same. That would be incorrect. You don't simply turn up the blue gain to compensate as that isn't necessarily the right thing to do.

The right thing to do is to touch nothing and measure the greyscale/gamma response from black to white. That's what the tools I recommended are for. Then you decide what needs to be done. In other words, you need to do a proper greyscale and colour calibration of your set. Not blindly fiddle with controls.

Just blindly turning up blue on the low end is the incorrect thing to do, but if you want to do that just turn up blue on the low end in your TV's service menu. You haven't indicated what display you have so it's impossible to be more specific.

Good luck.

Kal

kjkjk · Joined: 04 Nov 2017 Posts: 4

http://www.lagom.nl/lcd-test/contrast.php

in link the - table on the white looks great from 1 to 32

**kal** · Posted: Mon Nov 06, 2017 1:12 pm Post subject:

As I mentioned above, turn up blue on the low end in your TV's service menu. You haven't indicated what display you have so it's impossible to be more specific.

Kal

kjkjk · Joined: 04 Nov 2017 Posts: 4

OLED 9300

**kal** · Posted: Mon Nov 06, 2017 8:26 pm Post subject:

Turning up the blue low end is usually done in hidden service menu. Some TVs will have a full blown CMS (colour management system) available too that lets you do lots of adjustment. Every TV is different, so the menus will all be different. I don’t know what TV you have.

Keep in mind too that normally the controls in the service menus are meant for doing a full blown calibration with a meter and software as I recommended in my original post above. They're not places people should be tinkering in blindly (usually).

wfdTamar · Joined: 31 Jul 2010 Posts: 15 Location: Tasmania, Australia

I've just seen this thread. I'm just a mug punter end user that likes my TV.

It is very frustrating for the consumer to buy what they think is a high end TV, get it home and find the picture is actually not very good after all (outrageous grass and flesh tones, bad shadow detail, etc). The last few TV's I've bought were both considered the best available and I found them both lacking. There is no easy and cheap fix unfortunately. You can only go so far with a 'calibration DVD' like Spears & Munsell and adjusting by eye. Not all TV's have the complicated controls to adjust to get to the nitty gritty and if they do, even once you understand what you're doing to get them accurate just by eye is hard, if not impossible.

So next level of investment is a calibration meter & software and that means you also need three things -
1. The patience to learn how to use it to do a manual calibration.
2. A computer to run the software.
3. A TV that has the detailed controls required for adjusting and storing all the appropriate settings.

Or you can pay someone that has a really fancy calibration meter to come and do a calibration on your TV. That takes care of No 1 & 2 above, but you still need No 3. Some people do this annually, but you may get away with less than that, particularly if you're less fussy.

Next step up - A further investment can make the process easier (almost completely automated), put it in your own hands and give you other benefits (upscaling and switching multiple video sources), but it is a sizeable amount of money (in my case more than my expensive TV). Buy a video processor that can calibrate with the meter and software. The Lumagen Radiance range are an example.

My own preference is to buy the complete setup so I'm self reliant and get the best result (without constantly having to call on others). There's a learning curve, but I found it worthwhile with my last TV and hopefully will be for my current one.