Display is not colour-managed — vendor sRGB colour mode exists but Sailfish never selects it

[tarkhun]

@anon15408959

No, you’re saying this is a software problem, but it isn’t.

@anon15408959

What I’m trying to say is that I simply don’t believe this problem is software-related. I’ve read articles about software-related display issues like this, but honestly, this one clearly looks like a problem caused by a cheap display failing proper quality control during manufacturing, which is why some people experience it and others don’t.

I don’t want to be that person, but… Well, well, well. That did not age well.

Anyway,

@ptu

You can test it here: Interactive Wide-Gamut Comparisons
Top image, sRGB on the left, P3 on the right. On Jolla Phone they look identical.

On a colour-managed wide-gamut phone they’re clearly different, I checked that on an iPhone 11 Pro.

On 5.3.0.11 with Firefox ESR 153, looks like the top image is different.

Though:

@ptu

Here’s how they look like on a colour managed IPhone. That ProPhoto is the clearest symptom, because ProPhoto has the widest colour space of the three.

Since the gamut is wider, the same rose would have a smaller value in ProPhoto scale, than in sRGB. And when no colour management performed like in JP2, ProPhoto ends up bland, while IPhone “knows its limits” and scales it the best it can.

In this instance, the photo looks the same as here:

Summary

@0312birdzhang

And yes, I do not have the yellow tint anymore, I am trying to discuss color management.

[ptu]

It’s possible that the browser configs are different in 153. I don’t know how if there’s a similar trick there.

That was more like a spin-off though and color management should be done at OS level, not individually in each app.

[thejiral]

I have my JP26 on 5.2.22 and ESR115. After setting the about:config gfx.color_management.mode → 1 , I don’t see any difference in the first red image and also the P3 vs Prophoto look identical. Only srgb looks slightly more vibrant than P3.

I had a look on my Iphone 12 with Firefox/Webkit on the same site. The red image does show differences, otherwise the same thing, slight differences in P3/srgb and barely any differences of P3/ProPhoto.

Comparing both phone screens showing the same test page, the JP26 screen, tends to show the colours with more saturation, with the Iphone screen being close to what my Desktop monitor is showing.

[anarion321]

Is this what causes super saturation?