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Rec709 and DCI-P3

Community Beginner ,
Feb 27, 2021 Feb 27, 2021

I'm not sure if this is the best place to post this but it's colour related so I figured it's close enough.

 

I'm investing in a monitor very soon and have narrowed my search to two. The LG 32UN880 and the Lenovo P32u.

 

The LG covers 95%DCI-P3 colour space whereas the Lenovo covers 99.8% sRGB, 99.7% Adobe RGB and 95% DCI-P3.


I'm a motion graphics designer who's graphics predominantly go to air on HDTV, which is Rec.709 colourspace with the odd bit of gfx work on the internet (company homepages, Vimeo, YouTube etc)

I've got a couple of questions that I'm hoping someone can help me out with.

 

1. Can I get away without having a monitor that covers Rec.709 (I understand sRGB is similar?) 

2. As I work in broadcast television GFX should I rule out the LG (DCI-P3) as it doesn't cover sRGB or Rec.709.

3. If I were to buy a calibration kit, take the Spyder for example (https://spyderx.datacolor.com/shop/) can you calibrate a monitor that covers DCI-P3, to Rec.709 for instance.

 

I realise I'm probably looking in to this too much but if someone can help/advise then I'd be very grateful.

thanks 

 

 

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LEGEND ,
Feb 27, 2021 Feb 27, 2021

Bear in mind colour management will only match screen colours for colour managed apps. My understanding is that most video production tools, and most movie viewers are not colour managed at all, so you see the raw RGB. You need to avoid wide gamut monitors (run far, run fast) but otherwise matching the broadcast standard, or typical customer equipment seems a fair choice. The customer will of course turn saturation way up, because that looks better to them! I do suggest posting in forums dedicated to your specific work though. 

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Community Expert ,
Feb 27, 2021 Feb 27, 2021

That's right, in movie/video production the standard is to adjust the monitor to the target color space as closely as practically possible, but not use any color management to ensure universal accuracy.

 

So what you need is a monitor that matches Rec.709/sRGB (same primaries) as closely as possible. Any standard gamut monitor should qualify in that regard.

 

A wide gamut/DCI-P3 monitor is at best wasted, at worst a problem. You will need to set it to emulate Rec.709, and all that extra gamut coverage, which you pay for, is wasted.

 

It's true that the really good wide gamut monitors, like e.g. Eizos, have emulations that are very accurate, more accurate than what you get with a standard gamut model. But for your purpose, you need to decide whether it's worth the considerably higher price.

 

Don't pay too much attention to those percentages. They just refer to total gamut volume, but the actual shape of it, determined by the three primaries, is more important. The reason they specify less than 100% sRGB coverage is just that the primaries are slightly shifted relative to the ideal position, so a tiny slice of the sRGB gamut is outside the monitor gamut. That in itself is totally insignificant; it matters a bit more that the shifted primaries slightly affects the reproduction of individual colors. A sky blue, for instance, might be a tad more cyanish or magentaish than what is absolutely correct.

 

The above is based on your stated purpose. If you're doing photography and/or print design as well, my advice would be to get something much better than the two monitors you propose, something that could take full advantage of a completely color managed process.

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Community Beginner ,
Mar 06, 2021 Mar 06, 2021

Thanks both for your feedback. When i began looking, i didn't realise it was such a minefield when searching for a new monitor. 

You both have given me food for thought and i have since gone back to the drawing board, loosened the budget slightly and shortlisted the following:

 

Dell U3219Q

Viewsonic VP3268

BenQP3220u

Asus PA329C

Eizo EV3285FX

 

From the list above I'm favouring the Asus PA329C as it does well at covering a range of the colour spaces straight out of the box and with the 10 bit screen rather than 8 bit plus FRC it provides me with more scope moving forward. My only concern is the lack of an in depth review on this particular monitor. However, the more i read the more it sounds like a lot of these 32" monitors at the top end £800-£1500 are much of a muchness, all are very good and have slightly differing pros and cons.


Thanks again for your responses. 

 

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Community Expert ,
Mar 07, 2021 Mar 07, 2021

Hi

I'd recommend an Eizo Coloredge display because its hardware calibration will allow simulation of Rec 709 properly.

Personally, I've found that the best way to do this with an Eizo Coloredge display is to use the basICColor display software to calibrate, it does use the inbuilt Eizo calibration device and the Hardware LUT also. 

https://www.colourmanagement.net/products/basiccolor/basiccolor-display-software/

the basICColor display pro version even allows visual whitepoint tuning to better match broadcast monitors like the Flanders.

 

This conversation gives a bit of insight into the maze of dsiplay accuracy in broadcast situations. 

https://community.adobe.com/t5/premiere-pro/premier-2020-changes-the-color-of-my-video-when-i-import...

 

BTW, looking at sRGB gamut volume plotted within the DCI-P3 colourspace it seems that DCI-P3 easlily exceeds sRGB,

It's not possible to upload a movie here but if you send me a direct message, I can send you a link to a 3D grapher movie from Colorthink PRO showing the gamuts 

 

I hope this helps
neil barstow, colourmanagement net :: adobe forum volunteer
google me "neil barstow colourmanagement" for lots of free articles on colour management
[please only use the blue reply button at the top of the page, this maintains the original thread title and chronological order of posts]

 

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Community Expert ,
Mar 07, 2021 Mar 07, 2021
LATEST

I think you need to elaborate on why basICColor is better than using Eizo Colornavigator?

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