View Poll Results: Does your Lumia 950 has screen rendering/calibration problems?

Voters
43. You may not vote on this poll
  • Yes, the gradient is totally off, the clipping is massive.

    18 41.86%
  • Yes, but only slight clipping.

    7 16.28%
  • No, renders a normal gradient, just like on other screens.

    18 41.86%
08-10-2016 10:43 AM
193 1234 ...
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  1. cristixxxlog's Avatar
    So you have the problem too...

    The first one looked better , probably due to the short exposure.

    I've looked on different phones and on my computer, I must really strech my eyes to read the numbers up to 7.
    from 7 to 0 I cannot read them, the background is too dark.

    On the Lumia 950, everything up to 4 included are clearly visible. 3 a bit harder but still clear, rest imlossible to see. The gradients are badly messed up.

    I've put the same test on Microsoft community forum, I see that sometimes people from MSFT read themcand offer answers.

    If we could have a way to calibrate the screens ourselves the problem would have been solved...



    Sent from mTalk
    TheChazas likes this.
    01-23-2016 07:05 PM
  2. Zeem Frostmaw's Avatar
    My gradients look fine on the 950 aside from 1-4 as others have noted, which are clearly wrong compared to the perfect gradients I see on my 920.

    That said though, I haven't noticed any actual real-world issues with the screen. Videos are as gorgeously sharp and vivid as I care for them to be.
    01-23-2016 07:08 PM
  3. MindtakerWP's Avatar
    This is a problem with all the 950s, hope that they fix it soon.

    "Clear black" issue?
    01-23-2016 07:16 PM
  4. cristixxxlog's Avatar
    Have a look at this wallpaper, downloaded from the web.
    Boost the brightness to max, go in a dark room (essential), and look on the left side of the image at the background.
    There is a huge stain in the background. This is only visible on the 950.
    On the computer is perfect. However, if I boost the gamma level from 1.0 to 1.5/1.8, I see it in all it's glory.




    Sent from mTalk
    01-23-2016 07:29 PM
  5. MindtakerWP's Avatar
    Have a look at this wallpaper, downloaded from the web.
    Boost the brightness to max, go in a dark room (essential), and look on the left side of the image at the background.
    There is a huge stain in the background. This is only visible on the 950.
    On the computer is perfect. However, if I boost the gamma level from 1.0 to 1.5/1.8, I see it in all it's glory.

    http://i.imgur.com/N9IpqUg.jpg


    Sent from mTalk
    I see the stain even on my IPS Monitor. And in the right too.
    01-23-2016 07:44 PM
  6. cristixxxlog's Avatar
    On the laptop with 50% brightness - no stains;
    On the tablet (IPS - windows 10) - In the pitch black room with 100% brightness I can see some stains in both right and left, but very hard to spot and the background is altogether way darker than on the 950.If I let the brightness at 50% there is no stain visible on either part.
    On the 950, even on 25% brightness, the left stain is clearly visible. In the rest of the background is a perfect uniform dark brown, no signs of gradients or any other color difference. Which is a bad thing, because the background is a big gradient ....

    That wallpaper I used on my Dell laptop at work for a couple of weeks and as a wallpaper for my ex Z3 Compact and for the Galaxy S6 that I borrowed from a friend (when waiting for the 950 to be shipped). Needless to say, the first and only time I've seen that left stain was when I've put the wallpaper on the 950.
    01-23-2016 08:19 PM
  7. cristixxxlog's Avatar
    I managed last night to post this also on the XL forum.
    First one that tested didn't have the problem.
    This looks more and more like a FW problem, probably a bad driver.

    I also managed to post it on MSFT community forum and I'm planning to get in touch with WC, Wmpoweruser, GSMArena and WinBeta to test their handsets and see the results. Maybe also write an article about this so MSFT doesn't ignore us.

    This topic also appeared on the first page of WC, so maybe we will draw some more testing and traffic.

    Sent from mTalk
    TheChazas and Theo Kapaa like this.
    01-24-2016 04:04 AM
  8. abogdan's Avatar
    This is on my l950. Picture is made by l920.
    wp_20160124_11_17_42_pro.jpg
    01-24-2016 04:25 AM
  9. MindtakerWP's Avatar
    I managed last night to post this also on the XL forum.
    First one that tested didn't have the problem.
    This looks more and more like a FW problem, probably a bad driver.

    I also managed to post it on MSFT community forum and I'm planning to get in touch with WC, Wmpoweruser, GSMArena and WinBeta to test their handsets and see the results. Maybe also write an article about this so MSFT doesn't ignore us.

    This topic also appeared on the first page of WC, so maybe we will draw some more testing and traffic.

    Sent from mTalk
    Not really, if you check (right XL):



    1-3 extremely dark, and brown tint. Even my 950 looks better (950 has better color accuracy on reviews).

    BTW Samsung 1 to 3 are extremely dark too.

    My 950:



    There is the same "issue" on the XL.

    This is on my l950. Picture is made by l920.
    Click image for larger version. 

Name:	WP_20160124_11_17_42_Pro.jpg 
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    Very noticeable.
    In extremely dark situation the black seems like brown and the gray like black.
    Last edited by MindtakerWP; 01-24-2016 at 10:40 AM.
    01-24-2016 10:26 AM
  10. cristixxxlog's Avatar
    The color depends also on the color profile chosen in settings. Changing the profile also changes the tint.

    What I can see from the XL is that 8 to 0 has progressive darkness in small steps (just like the note).
    On the 950 (yours included) there is an sudden change in darkness from 4 to 3. 4 is too bright, 3 is too dark. Also untill 4 the colors are too bright, more than normal.

    In the end the problem is the sudden switch from a color to the next. It suppose to be just one shade (whatever the tint) but on the 950 the difference is too big, that is why we see things like stains of different dark colors.
    01-24-2016 11:12 AM
  11. MindtakerWP's Avatar
    The color depends also on the color profile chosen in settings. Changing the profile also changes the tint.

    What I can see from the XL is that 8 to 0 has progressive darkness in small steps (just like the note).
    On the 950 (yours included) there is an sudden change in darkness from 4 to 3. 4 is too bright, 3 is too dark. Also untill 4 the colors are too bright, more than normal.

    In the end the problem is the sudden switch from a color to the next. It suppose to be just one shade (whatever the tint) but on the 950 the difference is too big, that is why we see things like stains of different dark colors.
    Yes, but my 8 still in vivid is gray (and if you see from a side there is a green tint in XL).

    Not at all for me, that's depends in the camera shoot, he should shoot more slow to note this "issue". But the 3 is really different.

    Waiting for that picture and a shot with the wallpaper.
    01-24-2016 12:01 PM
  12. abogdan's Avatar
    I don't see that the pool results reflects what we all agree about l950 calibration problem....
    01-24-2016 12:14 PM
  13. flitzpiepe666's Avatar
    I have the same "Problem" (and also voted for it).
    But some time ago I read in a Review, that with automatic brightness, it can get a lot brighter (measured) than the 100% non automatic.

    Please test the following:
    go into a dark area and turn on one light. turn the phone in automatic brightness with maybe 100% (also works with less).
    get the gamma-test Picture on the Screen, hold the phone in front of the lamp for a few seconds.
    now take the phone away from the lamp or turn the lamp off - immediatly look at the test-Picture!
    on my 950 it Looks EXACTLY as it should, I can see the numbers 1-3 with clearly different darkness-steps.

    So I GUESS the phone was programmed like that. Maybe they want to have the Amazing black that only a amoled Display can Show and have Chosen a specific "darkness" from that on the Pixel just gets turned off (that would be the reason for not really seeing anything at the 1st three fields).
    maybe they thought, in area which is so bright that the user sets the Display to 100%, they have to get some dark Areas to look really black (for a good contrast!?) and so they decided to turn off the Pixels at that darkness.

    I am really sure that "Problem" has to do with the amoled (turning off Pixels for black/really dark) technique and the decision to Show not only black but also really dark Areas with turned off Pixels.

    As I said, test it with automatic brightness and get the Display to be really bright and the gamma-Picture Looks as it should.
    When the phone realizes it is not that bright anymore the Display gets darker and one number after the other "disappears".

    I think the fact that the test-Picture Looks perfect during the "automatic-brightness-test" Shows, that definatly cant be a Hardware Problem at all.

    (btw. I cant see the bad looking Areas next to vaders helmet in the star wars Trailer - no matter what brightness Setup I use. So maybe your phone HAS a Problem if u see those. I tried it with edge and metrotube)
    01-24-2016 02:17 PM
  14. Joel Bjornklev's Avatar

    I think the fact that the test-Picture Looks perfect during the "automatic-brightness-test" Shows, that definatly cant be a Hardware Problem at all.


    That's "good" news! I noticed this post a few hours ago and got a little worried. Good work with the experiment
    01-24-2016 02:40 PM
  15. TheChazas's Avatar
    I managed last night to post this also on the XL forum.
    First one that tested didn't have the problem.
    This looks more and more like a FW problem, probably a bad driver.

    I also managed to post it on MSFT community forum and I'm planning to get in touch with WC, Wmpoweruser, GSMArena and WinBeta to test their handsets and see the results. Maybe also write an article about this so MSFT doesn't ignore us.

    This topic also appeared on the first page of WC, so maybe we will draw some more testing and traffic.
    Great, I contacted two heads of WC myself, so I really hope it will get noticed and fix.

    I don't see that the pool results reflects what we all agree about l950 calibration problem....
    Because people don't understand what they are asked about or don't even bother.
    Ygglens likes this.
    01-24-2016 02:42 PM
  16. cristixxxlog's Avatar
    Did the test you sugested.

    Stil, the shades from 10 to 4/3 are still WAY too bright.

    If we need much more brightness you cannot light up all shades higher and let 0,1 and 2 to full black.



    No matter how low or high brightness the screen puts up, we still have around block 4 or 3 a sudden drop of light. We still go from very bright to very dark too sudden. More or less brightness means shifting the sudden drop to black one box higher or lower.



    Again, the problem here is dropping to a very dark shade in one step instead of several.



    I've put the sensor on top of the screen right above a light bulb, with the rest of the screen outside, so I can see it at max brightness. Yes, the gradient is nicer and clearer, but it still drops around box 2/3 from too bright to too dark. It is still a giant step instead of a gradual one. That means we will still have banding and clipping.

    However, this test is just a "never happening scenario" because when we will have so much light, our eyes will be adjusted to that lightning and we will not see the gradient being wrong.



    That is why I said dark room, because the darker the environment, the more messed up are the gradients, no matter how low/high brightness we have on the screen.



    This makes videos ugly watching them anywhere other than bright environments (in the subway, at night in bed with a normal/dim/no light.
    01-24-2016 02:44 PM
  17. hprvez's Avatar
    I have an xl and it does the same thing. Amoleds are really a fail and these panels in articular are among the worst

    Oh, I won't even start talking about the grey things scrolling over black background leaving purple ghosting behind, would have expected this kind of nasty **** from a cheap android phone where slow displays actually give the impression of a smooth os
    01-24-2016 02:52 PM
  18. cristixxxlog's Avatar
    @hprvez - purple ghosting means exactly what we are talking about here: bad gradients!

    Some samples in each step of brightness, with auto-brightness on and off.
    The pictures have written in red what settings each had.
    Attached Thumbnails img_5312.jpg   img_5313.jpg   img_5314.jpg   img_5315.jpg   img_5316.jpg  

    img_5307.jpg   img_5308.jpg   img_5309.jpg   img_5310.jpg   img_5311.jpg  

    TheChazas likes this.
    01-24-2016 03:20 PM
  19. flitzpiepe666's Avatar
    ok, strange.. that Looks totally different at my phone, will look for my old Nexus to get a Picture of my 950 Screen..
    I have great looking steps from 0 to 4 and the steps from 4 to 10 are the same :-O
    01-24-2016 03:25 PM
  20. cristixxxlog's Avatar
    @flitzpiepe666 - The problem lies in the range of 4 to 10. The difference is HUGE next to the 3 to 0. The huge jump in darkness ruins everything.
    The messed up algorithm is from 4 to 10. This range is way too bright next to the others, no matter the conditions....
    If you get a hold of your Nexus, make the test also on that one. Would be good to have a comparison with another....

    Only in bright environments this entire problem is not noticeable (basically the screen is perfect) due to the fact that the human eye adapts to high brightness and the gradients "look" good. This is exactly like short/long exposure. Our eye kind of has a "short exposure", thus it is unable to notice the major jumps in the gradients.
    01-24-2016 03:38 PM
  21. MindtakerWP's Avatar
    I was doing some testing:

    Nice



    Really nice



    There is difference in the last two bars (check in good monitor with zoom, in real life its easy to seen):



    Now the funny part, here I can see easily all the bars (also left bars), but in the PIC is so difficult to see.



    Then I change the shutter speed, cuz I see all the bars..

    And they are there!

    TheChazas likes this.
    01-24-2016 03:58 PM
  22. flitzpiepe666's Avatar
    01-24-2016 04:11 PM
  23. cristixxxlog's Avatar
    @MindtakerWP
    Interesting... What app/website/images do you use? Can you post them here (images) or name the app/website?

    The normal exposed image (with the instructions) has the most black colors too black - the first 3 boxes- (or the next ones are too bright?) There is big shift between them.
    In the overexposed image, everything is messed up, too overexposed I guess... But still, 3 boxes very dark, one barely visible and the rest non-existent.... That is still a massive color shift... For example, in that overexposed scenario, the visible boxes should have spanned to like 7-8 boxes before going completely white beacause of the overexposure. Instead, the colors span to 3 boxes and that is it (the 4-th is so bright that doesn't really matter).


    @flitzpiepe666 - that is some bright environment there. And it looks ok, there is too much light for the problem to be clearly seen. However box 1 is too dark compared to box 2 (or the other way around, the same thing).
    01-24-2016 04:16 PM
  24. RuleOfSines's Avatar
    Did the light test with mine, in a dark room I aimed a headlamp at the light sensor. The screen brightened up and the gradient suddenly looked normal. Once it faded out it turned the first four boxes completely off again.
    flitzpiepe666 likes this.
    01-24-2016 04:32 PM
  25. MindtakerWP's Avatar
    @MindtakerWP
    Interesting... What app/website/images do you use? Can you post them here (images) or name the app/website?

    The normal exposed image (with the instructions) has the most black colors too black - the first 3 boxes- (or the next ones are too bright?) There is big shift between them.
    In the overexposed image, everything is messed up, too overexposed I guess... But still, 3 boxes very dark, one barely visible and the rest non-existent.... That is still a massive color shift... For example, in that overexposed scenario, the visible boxes should have spanned to like 7-8 boxes before going completely white beacause of the overexposure. Instead, the colors span to 3 boxes and that is it (the 4-th is so bright that doesn't really matter).
    Yes, but there are big difference between picture and real life, in real life I can see all the bars without any problem.

    RGB dimming is from "Hardware Test" App.





    TheChazas likes this.
    01-24-2016 04:42 PM
193 1234 ...

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