Dci-p3

[Black Pearl]

Found this site with a test to see if your monitor can reproduce a wide colour gamut - in this case the DCI-P3 used in the latest iPhones, iPad Pro's and iMac's. Certainly it works on my iPhone 7 Plus and 5k iMac but if I use my wife's older iPad Air the square is blank.



I'm guessing a good Adobe-RGB display should do the same?

[pnodrog]

I have a good but older Philips 240 PW IPS monitor and it is displaying the compass like design in the red square clearly. Be interesting to get more results.

P.S. Visible on my now discontinued Motorola cell phone too.

[Manfred M]

I can confirm that I see the square only on my iPad Air 2.

On the flip side, both my wide gamut AdobeRGB compliant screen does as does my low end sRGB computer display, using FireFox. Google Chrome does not display it, so the test is also browser dependent. That suggests to me that FireFox continues to be the only browser that is fully colour managed.

[Black Pearl]

I can confirm that I see the square only on my iPad Air 2.

On the flip side, both my wide gamut AdobeRGB compliant screen does as does my low end sRGB computer display, using FireFox. Google Chrome does not display it, so the test is also browser dependent. That suggests to me that FireFox continues to be the only browser that is fully colour managed.

Are you feeding the low end screen an AdobeRGB signal via your colour management? Apparently this will force it to mimic a wider gamut but can produce false colours.

[Manfred M]

Are you feeding the low end screen an AdobeRGB signal via your colour management? Apparently this will force it to mimic a wider gamut but can produce false colours.

No, it is set up as sRGB.

I just did a further test on my ancient Android powered Samsung Galaxy SIII - I can see the pattern there too. I am using the Android version of FireFox on it. I wonder if the browser is set up to handle out of gamut colours this way. Safari has never done colour management well, so perhaps we are seeing something quite different than what the authors of the article are assuming?


Note: I just went back and looked at the image on my iPad Air 2 with FireFox and I just get the orange square. So this is not purely a browser related issue.

I found the following image on the following website: https://dot-color.com/category/color-gamut-standards/





It looks like it covers roughly the same number of shades as AdobeRGBB, but is biased more to the reds while AdobeRGB is biased more to the greens / blues.

[Black Pearl]

Just tried it on the iMac (which does have a DCI-P3 display) but used Chrome and it shows as you'd expect but the colours are far duller than when viewing with the native Safari app and they are duller than if I pull the image into PS to view it.

[DanK]

Interesting. shows up clearly on my computer monitor and my iPhone 7. Doesn't show up on my old iPad Air (generation 2)

[pnodrog]

I can confirm that I see the square only on my iPad Air 2.

On the flip side, both my wide gamut AdobeRGB compliant screen does as does my low end sRGB computer display, using FireFox. Google Chrome does not display it, so the test is also browser dependent. That suggests to me that FireFox continues to be the only browser that is fully colour managed.

After reading this I switched from FireFox to Chrome and confirmed Manfred's findings.

[Dave Humphries]

After reading this I switched from FireFox to Chrome and confirmed Manfred's findings.

As did I earlier, but seeing this made me try it on Edge and Internet Explorer too - blank red/orange on those too!

Apart from my trusty FireFox, only Pale Moon (a FireFox derivative) displays the pattern.

Needless to say, all are being viewed on a single monitor, purportedly only sRGB anyway (Viewsonic VP2365wb) and the OS is Win 10 (u/g from 7).

FWIW, Dave

[Black Pearl]

At this point it might be worth pulling the file onto your systems and viewing it in something like Photoshop to remove (I think) the browser.

[royphot]

When viewed on my Dell U241TM using Win 10 Edge browser, I just get a red square. If I copy the image onto my HDD and view it with Bridge or PS I can see the pattern when the working space profile is set to Adobe Rgb.
However on my Android Samsung Tablet SM-T800 (10.5 inch version with the Oled screen) I can see the pattern very clearly.

I always thought my Dell Monitor was only capable of handling Srgb gamut.

[Dave Humphries]

I always thought my Dell Monitor was only capable of handling Srgb gamut.

Me too with mine, but I really shouldn't have been surprised.

LED/LCD manufacture isn't an exact science (well, you know what I mean), and while our monitors exceed sRGB in the orangey/red corner of the gamut, they probably don't do so well in other corners, leading to the manufacturer's only being able to claim x% of sRGB, aRGB or DCI-P3, etc. which sets our expectations low.

It is somewhat dismaying that so many browsers are still rubbish at displaying wider gamuts - just goes to show why images should be converted to sRGB for web viewing since even if our display can show it, the browser spoils it completely

[JBW]

Using Firefox both my Lenova and my Acer monitor show the interior design

[Stagecoach]

Interesting ....................

Looking at Robin's posted red square on my monitor in CiC and using Google Chrome I saw no pattern. But I'm aware Chrome is not colour managed.

Downloaded the image to the hard drive and then opening in PSCC I saw no pattern.

I decided to re-calibrate the monitor with my Spyder (had last done it about 2 months ago). On completion of calibration the result showed 99% srgb compliant whereas always before it had only ever achieved 96%.

I then opened the image and the compass design shows very clearly

This can only suggest my monitor has not been calibrating as well as it should of for some unknown reason.

[Black Pearl]

Well if nowt else its help you Graeme

It turns out to be far more complicated than I had first thought, I assumed it would just be a monitor thing with the design showing on wide gamut displays and not on others but it turns out to be heavily biased by our browsers.

Viewing it on Apple devices using Apples browser it is very clear-cut. It show on the iPhone 7 and 5k iMac which are both DCI-P3 compliant but not on the older iPad Air, iPhone 6 and iPad Mini, nor does it show on the new iPhone SE but that has the display from a 5s - just as you would expect.

[george013]

Maybe I'm wrong. But the gamut of a monitor is a hardware property. I believe this picture is only showing if the used software, in this case the browser, is using color management.

George

[Black Pearl]

Maybe I'm wrong. But the gamut of a monitor is a hardware property. I believe this picture is only showing if the used software, in this case the browser, is using color management.

George

All my Apple devices use the same browser yet only the newer devices with a wide gamut display show the design.

[george013]

All my Apple devices use the same browser yet only the newer devices with a wide gamut display show the design.

The monitor I'm looking at is for sure not a wide gamut. And I can see the compass in ff. And not in Chrome. Just like others here.
So maybe that trick only works with not color managed browsers like Chrome. I'm using windows.

George

[Black Pearl]

Try this link and see how your browser(s) handle the two images: https://photographylife.com/is-your-...-color-managed

On my iMac both look the same so I am going to assume Safari is colour managed?

EDIT: Looks like Safari on macOS and iOS are both colour managed - http://www.color-management-guide.co...anagement.html

[george013]

Try this link and see how your browser(s) handle the two images: https://photographylife.com/is-your-...-color-managed

On my iMac both look the same so I am going to assume Safari is colour managed?

EDIT: Looks like Safari on macOS and iOS are both colour managed - http://www.color-management-guide.co...anagement.html

In FF a difference between those photo's. In Chrome not. The world up side down.

I once posted a link to Jeffrey exif viewer which also contained an article about color management and some tests. I can't do now for the site is off line.

George