Monitor and Calibration

Do you have questions about Desktop Video, Converters, Routers and Monitoring?
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Jonzinator

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  • Real Name: Troy Miller

Monitor and Calibration

PostThu Feb 13, 2020 2:20 am

Hello,

I have been struggling with getting the in app screen color to match my output after color grading. I have jumped through all the hoops I can find and everything is calibrated.

My color grading and output still do not mach. I am looking for any guidance to setting up a calibrated monitor for color grading on a Mac. I read something somewhere about a piece of hardware I might need but I have not been able to find any related articles.

Thanks in advance for the help!

Troy
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Uli Plank

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Re: Monitor and Calibration

PostMon Feb 17, 2020 2:16 am

You need an I/O device (like: www.blackmagicdesign.com/products/intensity) between your Mac and the external, calibrated monitor. And ONLY trust that external monitor once you got that!
Resolve Studio and Fusion Studio under MacOS Mojave 10.14.6
iMac 2017 Radeon Pro 580 8 GB VRAM and 32 GB RAM
Mac mini 16 GB RAM plus eGFX Breakway Radeon RX 580
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ttakala

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  • Location: Finland
  • Real Name: Timo Takala

Re: Monitor and Calibration

PostMon Feb 17, 2020 4:43 pm

I believe you need a fairly high end grading monitor that accepts internal hardware calibration to use a Decklink card or similar. If your monitor does not support that you can start by reading the sticky thread on the Resolve side of this forum: viewtopic.php?f=21&t=101253

For what it's worth, my humble setup to try optimize color accuracy:
- Make 3d viewer LUT for Resolve with DisplayCAL using an X-rite ColorMunki Display.
- Load the LUT to 3d viewer in Resolve preferences and "Use mac display color profiles" OFF.
- Set project color space to rec709(scene).

That has given me fairly reliable color. Of course your needs for accuracy may be different from mine. For truly accurate colors you need a proper grading monitor and an I/O device like Uli said.
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Kays Alatrakchi

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Re: Monitor and Calibration

PostMon Feb 17, 2020 5:49 pm

I did a tutorial on this a while back...I really should update it but the basic idea remains the same:




At the very least, get yourself a used Decklink Mini Monitor HD which you can find on eBay now for about $50, and connect it to the best panel you can afford, and calibrate it!
>>Kays Alatrakchi
Filmmaker based in Los Angeles, CA
http://moviesbykays.com
Resolve 16, Mac OS X 10.13.6 (High Sierra), i7 8700k, 32Gb DDR4 RAM, Dual GTX 1080ti, Decklink Mini Monitor, USB 3.1 RAID
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Uli Plank

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Re: Monitor and Calibration

PostTue Feb 18, 2020 2:46 am

Second that. I have the same, even for 4K, since there is no cheap, external device of that kind for 4K.
You can still judge the colors in lower resolution.
And you'll be surprised.
Resolve Studio and Fusion Studio under MacOS Mojave 10.14.6
iMac 2017 Radeon Pro 580 8 GB VRAM and 32 GB RAM
Mac mini 16 GB RAM plus eGFX Breakway Radeon RX 580
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Marc Wielage

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  • Location: Hollywood, USA

Re: Monitor and Calibration

PostTue Feb 18, 2020 3:44 am

@Steve Shaw has a good essay on "Why Calibrate" at his Light Illusion website, along with tech papers on how to use his software and what probes to use for calibration:

http://www.lightillusion.com/why_calibrate.html

Be aware that things will change in terms of the look when you watch them on different kinds of devices. Read these:

"Grading for Mixed Delivery: Cinema, Home, and Every Screen in Between" by Cullen Kelly
https://blog.frame.io/2019/10/14/gradin ... -delivery/

and I think it covers the issues and the solutions very well. Understanding color management is also helpful:

"Color Management for Video Editors"
https://jonnyelwyn.co.uk/film-and-video ... o-editors/
marc wielage, csi • VP/color & workflow • chroma | hollywood
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Jonzinator

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  • Real Name: Troy Miller

Re: Monitor and Calibration

PostTue Feb 18, 2020 12:00 pm

Great info!

Thanks for all the tips. I will be diving in this week to get my system dialed. I'll let you know what I settle on.

Thanks again!

Troy
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Ole Kristiansen

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Re: Monitor and Calibration

PostTue Feb 18, 2020 4:23 pm

Kays Alatrakchi wrote:I did a tutorial on this a while back...I really should update it but the basic idea remains the same:




At the very least, get yourself a used Decklink Mini Monitor HD which you can find on eBay now for about $50, and connect it to the best panel you can afford, and calibrate it!


Hi Kays! I love your video - but there is a problem in time: 7:58,
you forgetting to change 1D Color Viewer Lookup Table, 3D Color Viewer
Lookup Table, 1D Scopes Lookup Table, 3D Scopes Lookup Table -
from Use Video Monitor Selection to No Lut Selected!

That's probably what gave Dave Dugdale problems when he wanted to:
Calibrating with DisplayCal in Resolve thru Mini Monitor!

Best,
Ole

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Kays Alatrakchi

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  • Location: Los Angeles, CA

Re: Monitor and Calibration

PostWed Feb 19, 2020 11:23 pm

Ole Kristiansen wrote:Hi Kays! I love your video - but there is a problem in time: 7:58,
you forgetting to change 1D Color Viewer Lookup Table, 3D Color Viewer
Lookup Table, 1D Scopes Lookup Table, 3D Scopes Lookup Table -
from Use Video Monitor Selection to No Lut Selected!



Yeah, I typically change that setting in my sessions as a routine. My biggest question is why are they on by default? Particularly the Scopes makes no sense to me. I always want my scopes to show me exactly what data I recorded and not what the data through a LUT looks like. I don't get it.
>>Kays Alatrakchi
Filmmaker based in Los Angeles, CA
http://moviesbykays.com
Resolve 16, Mac OS X 10.13.6 (High Sierra), i7 8700k, 32Gb DDR4 RAM, Dual GTX 1080ti, Decklink Mini Monitor, USB 3.1 RAID

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