Just bought a LG G Pad 8.3 a few days ago after reading the many positive reviews online.
Was especially looking forward to the supposedly high quality screen with excellent color accuracy, as it is also marketed by LG.
So it is with disappointment to discover that my unit does not exhibit these qualities.
The screen on mine has a low color accuracy, especially with reds.
Red colors deviate quite a lot and look almost orange. This results in a poor viewing experience and was not what i expected. Most review videos and photos i have watched does not show this color imprecision.
I suppose i am not the only one with a screen looking like this.
It seems like the screen has not been calibrated properly from the factory.
I feel that i have gotten an inferior product and questions if this is general quality problem with the tablet?
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A lot of us have a yellowish screen (including me), I personally fixed it using Screen Adjuster, then the CM 11 built in color adjuster. You can try the color correcting methods I mentioned or use your warranty for a replacement.
Sent from my iPhone using Tapatalk
I don't really consider my screen as being "yellowish". The whites displayed are pretty neutral i think.
I already tried Screen Adjuster as you suggested, but i have not been able to get any improvement with it. Rooting is not something i want to do for now.
I suspect that LG is sourcing different LCD panels for this device, and that they are not all of equal quality or calibrated to the same standard.
The early production units, among those sent to reviewers, seems to have screens of higher quality with more accurate colours.
Mine is a 402 production.
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
Zarrick19 said:
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
Click to expand...
Click to collapse
Thank you for sharing your experiences. Please cast a vote in the poll.
Could you perhaps show a photo of your screen?
I think that LG at some point changed the IPS panel used in G Pad 8.3 for a different one. After all of the problems reported with the early productions this would seem appropriate.
It seems, though, that the color calibration of the panels have gone wrong in the process.
It's regrettable, as i otherwise like the aspects of the tablet. I guess i will just have to live with it or buy something else.
I think that the major problem is the gamma curve setting. If you can and know how to, try the kernel posted in the Android development section, which has improved (normal) gamma, although it has possibly some other minor issues unrelated to the display, but nothing unrecoverable - you can flash back to stock kernel easily.
I am currently running with it so you can rest assured that the tablet is not going to die, or something
P.S. Maybe I spoke too soon - had to revert back to the stock kernel because I got apps crashing and also some spontaneous system reboots with the suggested kernel, probably due to the additional tweaks in it, apart from the gamma tweak.
Zarrick19 said:
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
Click to expand...
Click to collapse
Although I do not have any orange issues, it is true the colors are not perfect, but nor are they bad, at least on mine. My monitors are all color-calibrated and I too have made comparisons. You can use Trickster Mod to adjust the colors, but the gamma really requires the kernel of the ROM in my sig. Bear in mind that though Dell produces a nice monitor, if it is not specifically color-calibrated, then it too is not a reliable source.
Related
I found a dead pixel in my first nexus one so I decided to swap it. The new one arrived today and I played with them side by side. The screens are very clearly different between the two. With everything set up identical and the same brightness setting, the one with the dead pixel is very clearly washed out looking with a greenish bluish tint to it. I actually noticed this somewhat before receiving the swap but thought it might be my imagination (the screen didn't seem as clear as my previous t-mobile version.) However, with them next to each other the difference was night and day.
I tried to get a good pic of it, but my photography skills are lacking and this is the best I could get. In person the one on the left (new one) is way better looking. The one on the right (sending back for dead pixel) has nowhere near the contrast and feels washed out, greenish, and unsharp.
So to conclude, if you think your screen might not be as as good as it should be, you may be right. I can't help but wonder if the dead pixel was just a symptom of a larger problem with the screen; perhaps the significantly reduced battery life I experience (compared to the t-mobile version I originally had) is also related to a screen issue. Time will tell...
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Update: Here's a better pic. Especially note the green tint and washed out look at the top right where the time is displayed. Look back and forth between them. I edited the color slightly so that what you see more closely resembles what I see. In person the brightness appears the same for both even though the right one looks brighter in the pic.
I agree that the dead pixel could of been part of a bigger problem, but the way the picture came out it appears as if the one on the right is alot sharper.
You should try turning the brightness down on the phones before taking the picture. Also did you lose a flash, or is this effect just from it being at 100%brightness?
I know it looks that way, but it's just a crappy pic. I'll try again later today before I send the phone back. I didn't use flash, and screen brightness had no effect on the difference between the phones.
I actually prefer the the one on the right. The one on the left looks way too reddish/pink. Have you done a side-by-side comparison on the lowest brightness setting and going to a white screen page like Google?
the one on the right kind of looks like the color on a droid screen
The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO
bradsh1 said:
The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO
Click to expand...
Click to collapse
Agreed, I wonder if HTC received a delivery of defective AMOLEDs from Samsung and just decided to use them rather than return them...
I had a similar issue. My old Tmobile N1 had a the blueish tint (like the picture on the right) but I had a dead pixel.
My new Tmobile N1 has the purple tint (like pic on left) and has no dead pixels yet. I've had them equal amount of time now.
I wonder if perhaps the old screens were having dead pixel issues and HTC decided to go with some different screens?
It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.
erikikaz said:
It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.
Click to expand...
Click to collapse
With AMOLED there is no backlighting. Each pixel is its own LED, red green and blue ones, emitting its own light.
I've taken more pics at different light levels. Here's one with the brightness set all the way down. I edited the colors slightly so that what you see more closely resembles what I see in person. The left one does not have a purple or red tint; its colors are correct. The right one definitely has a green tint and is washed out looking. Also, in person the brightness of the two appears the same even though my camera picked up the green tint of the right one making it appear brighter in the photo.
Look at the top right where the clock is displayed to really notice the green tint and washed out look. Look back and forth quickly at the time...
My phone had the same effect of the left one, that is when I first got it. Over time, it starter to slowly lose that red/purple like tint, and the colors became more sharp and correct.
i think amoled screens are somewhat of an organism
I just got my replacement phone from HTC due to dust under the screen on my original N1 (purchased second day of release).
I noticed that the newer phone had quite a few differences, including the quality of the screen. See my post about my observations here: http://forum.xda-developers.com/showthread.php?t=655966
INTERESTINg..How much more battery life did you get with the new one?
Anyone else noticed this issue ??
There is a spot at the right (in the red circle ) which is quite brighter.
This is noticeable only in bright backgrounds (white websites, market etc..)
You can not notice it at all on black or other dark backgrounds (youtube app etc..)
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Mate, you should look at the screen on the Transformer in a darkened room.
Believe me, that's lightbleed, but not as we know it.
Search youtube for asus eee pad transformer lightbleed issue and see what I mean
I returned my first A500 because it had really bad light bleed. I guess that's what you would call it, but its like the opposite of the other tablets blight bleed complaint, noticeable on white backgrounds but went away with dark ones.
Futant55 said:
I returned my first A500 because it had really bad light bleed. I guess that's what you would call it, but its like the opposite of the other tablets blight bleed complaint, noticeable on white backgrounds but went away with dark ones.
Click to expand...
Click to collapse
Exactly..
Its the opposite from what other devices have, but its still annoying in the same way
anstelios said:
Anyone else noticed this issue ??
There is a spot at the right (in the red circle ) which is quite brighter.
This is noticeable only in bright backgrounds (white websites, market etc..)
You can not notice it at all on black or other dark backgrounds (youtube app etc..)
Click to expand...
Click to collapse
mine has that in the same location
anstelios said:
Exactly..
Its the opposite from what other devices have, but its still annoying in the same way
Click to expand...
Click to collapse
Either way, if it's a fault which spoils your enjoyment of the product then it's not acceptable in a product at this price point.
I returned 3 transformers with the same issue before I got pi$$ed off enough to ask for a refund.
Take it back if you are not happy and email support, they will only know about a potential issue if people are scrupulous about quality control.
I have the same problem so I took the a500 back to best buy for an exchange. The geek quad guy looked at the tablet and told me it is normal and refused the exchange. According to him, there is a light bulb that runs across the screen and the bright spot is the result of close contact between the bulb and the screen. He said that I could either return it or keep it but no exchange. His reason, once the tablet is opened, it can't be sold to other customers and he does not want me to end up return the exchanged tablet which will hurt the company's profit. I was like, sure, the iconia is the only product in the store and by the way, you should be an employee of the month for looking after best buy like that.
I really have noticed this issue on every device i ever held in my hands !!
This must be some general problem.. !!
How about everyone else??
i m really surprised that only a few people reported back on this issue !!
My screen does not have this problem. Maybe your screens are too tight? In fact my Asus netbook does have this problem, (kind of), because it's backlit by LEDs.
Does anyone know what the backlighting is on these Iconias? Did anyone take one apart?
I also noticed this a bit when I was doing some pdf reading with the tablet vertically oriented. Pretty much the exact same spot, but it sounds like it was manufactured that way by the responses of some of the other people on here.
Same problem here at the same spot. Pretty annoying when reading e-books for example. Is there something we can do ?
So I took the time tonight to measure the color accuracy of my Nexus S 4G with my equipment. So without further a due:
Luminance
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Color Temperature
Gamma
RBG balance and DeltaE
(All measures used against the Rec709 standard. Using Nexus S with a slightly modified voodoo colors profile)
Cool, looks like the Nexus did pretty well
btw the images aren't loading from me, I have to right click them and open them in a new window to see them.
Pictures should be fixed, or at least showing up as more than just links now.
I have no idea what this means.
Its usually a test done for TVs to see how close your TV is to the reference standards.
In the first picture it tells you how uniform the brightness of the image increases.
The second one is how close the color is to pure white (equal balance between red, blue, and green) at every 10% increase in brightness.
The third graph is gamma. A little harder to explain but this basically shows if the display will appear darker or brighter as a whole.
The final shows the actual outputs of red, blue, and green at each brightness. The lower portion shows how much it deviates from reference.
(Any HT junkies out there, yes I know I'm using the term brightness incorrectly here only to make this more accessible)
Sent from my Nexus S 4G using XDA App
so, do you think you can make a color profile that is in every way perfect?
Not with the kernels I have seen. Most only have one point of change (ie color multipliers in Voodoo). Something perfect would take quite a bit of battery use I would imagine as most image processors that can create "perfect" picture are usually stand alone units costing $1000 plus.
I can also tell you each screen is not the same so what might be a perfect profile on my screen would be different for you. Depending on plenty of things including screen age.
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.
wingman1659 said:
Not with the kernels I have seen. Most only have one point of change (ie color multipliers in Voodoo). Something perfect would take quite a bit of battery use I would imagine as most image processors that can create "perfect" picture are usually stand alone units costing $1000 plus.
I can also tell you each screen is not the same so what might be a perfect profile on my screen would be different for you. Depending on plenty of things including screen age.
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.
Click to expand...
Click to collapse
curious wingman how do i optimize my screen. i would like to learn
Any chance you could do this on a SLCD Nexus?
devmonster86 said:
Any chance you could do this on a SLCD Nexus?
Click to expand...
Click to collapse
Joking right? Lol.
Sent from my Nexus S 4G using XDA App
wingman1659 said:
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.
Click to expand...
Click to collapse
Do you have a specific set of numbers you believe are the best for what is available currently through Voodoo?
Thanks for the great work.
have they improved it? I can't find any close picture comparisons.. Thanks.
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Looks better, but still there. I guess they're doing it to increase screen life or something, but absolutely hate that.
Once I installed Perseus on my Note II, I could hardly believe I'm looking at the same screen. Looks even better than iPhone 5 after calibration
yeah, but note 2 doesn't have pentile, doesn't it have a superior screen?
It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?
tuxonhtc said:
It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?
Click to expand...
Click to collapse
I believe posters on here claimed cost reasons. too bad.. I prefer the overall design and build, screensize to handset ratio of the s4, but like the htc one screen..
That might not be apparent in normal vision though. S3 has noticeable graininess, but the pixel density on S4 should pretty much settle that IMO.
And I don't know if they took the screenshot with adobe RGB mode or saturated standard mode.
I love SAMOLED, but just wish if they could switch entirely to RGB. Wouldn't mind paying a few extra bucks either tbh if they implemented that on Note 3.
tuxonhtc said:
It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?
Click to expand...
Click to collapse
I don't think they can manufacture FHD 1080p yet. At least not in the amounts that the GS4 would demand at a reasonable price.
tuxonhtc said:
That might not be apparent in normal vision though. S3 has noticeable graininess, but the pixel density on S4 should pretty much settle that IMO.
And I don't know if they took the screenshot with adobe RGB mode or saturated standard mode.
I love SAMOLED, but just wish if they could switch entirely to RGB. Wouldn't mind paying a few extra bucks either tbh if they implemented that on Note 3.
Click to expand...
Click to collapse
Yup, two issues: sharpness and color. It looks like the higher resolution overcame the less sharp drawback of pentile, but color tint looks is still there. need to verify what color mode the phone was in though.
welll, just got back from store. htc one's have multiple dipslay with different WB. but the s4 definitely had better WB in my eyes.
http://forum.xda-developers.com/showpost.php?p=40903338&postcount=225
Why is this thread even open ? Amoleds will always have a bluish tint. LCDs always have better whites but suffer on black levels.
KillaHurtz said:
Why is this thread even open ? Amoleds will always have a bluish tint. LCDs always have better whites but suffer on black levels.
Click to expand...
Click to collapse
if you read my response, you'll see that the One has a more bluish tint than the S4.
Searched google and couldn't find user input on the black level. According to that early test by a Chinese site they found black level to be extremely good. Here's the image
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Now as the phones reaching users can anyone confirm in pitch black the amoled output? To me that's the most impressive improvement dating back to when amoled first went HD on the galaxy nexus and lost that level of output.
Yes, it is totally black. Way better than S3 and Note 2.
The blacks are the best I've ever seen.
The pixels are completely off, as opposed to previous amoled screens where there was still a light glow.
Wanted to give this Q too I had previously SGS2 and SGS3 is it even better than SGS2 display in the case of black displaying? I was very satisfied with SGS2 blacks... THX
kultus said:
Wanted to give this Q too I had previously SGS2 and SGS3 is it even better than SGS2 display in the case of black displaying? I was very satisfied with SGS2 blacks... THX
Click to expand...
Click to collapse
It's much better., Infact it''s impossible to get better blacks as the pixels are completely off.
I was always disappointed with previous phones as in a dark room once your eyes focused the blacks would look light grey and you could see blotches and streaks.
On the s4 you see nothing at all.
If you switch your phone on in the dark all you see is the samsung logo on the screen, nothing else.
perfect THX for response I hope that will have zero stuck/dead pixels
That's amazing. It's pretty poor form that all reviews as far as I'm aware have stated the previous amoleds with that slight glow as infinite black.
Anyway the S4 finally has something I'm really jealous of now. Another question similarly relating, does the brightness go lower than the S3?
?????? Galaxy S3 ??????
I think something is wrong with mine. I have the Galaxy S3 and I would say it's a really dark gray, not quite black. But on the S4, I'd say it has a reddish tint to it when I have it all black in a dark room. I may try and take a picture of it tonight.
jasbur17 said:
I think something is wrong with mine. I have the Galaxy S3 and I would say it's a really dark gray, not quite black. But on the S4, I'd say it has a reddish tint to it when I have it all black in a dark room. I may try and take a picture of it tonight.
Click to expand...
Click to collapse
I think its every device or atleast very common, but most people havent notice it (atleast not yet) . Ive come to realize its software related so im not freaking out yet. Just posted this in the ATT forums: http://forum.xda-developers.com/showpost.php?p=40841213&postcount=104
It is honestly that black that when I was waiting on a video to buffer in my pitch black room that it looked like the blue circle was floating!! literaly no light on screen apart from the blue circle. It actually looks really cool lol
Infy_AsiX said:
That's amazing. It's pretty poor form that all reviews as far as I'm aware have stated the previous amoleds with that slight glow as infinite black.
Anyway the S4 finally has something I'm really jealous of now. Another question similarly relating, does the brightness go lower than the S3?
?????? Galaxy S3 ??????
Click to expand...
Click to collapse
It is brighter than S3. :good:
It is perfectly black unless you suffer from the bug I posted about here: http://forum.xda-developers.com/showthread.php?t=2256651 .
its pitch black, i tried finding some ink spots/ blotches and black level last night but failed miserably
suadion said:
It is perfectly black unless you suffer from the bug I posted about here: http://forum.xda-developers.com/showthread.php?t=2256651 .
Click to expand...
Click to collapse
ghosting problem I'm reading on xda sounds bad too
?????? Galaxy S3 ??????
There is a comparison between S3 and S4 black/grey scale in this video, FFW to 17:10 (or watch the whole unboxing and comparison to HTC One video if you want).
You may have seen this by now, but if not it might answer some of your questions.