Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

2013 27" ips glow & backlight bleed videos inside

D

dublove

macrumors newbie
Original poster
Oct 15, 2013
26
0
Concerned at my first real look at an IPS screen I decided to make a quick vid of my screen to see what everyone thinks.

This IPS screen in the iMac definitely has a very narrow viewing angle in all directions. I seem to have found the minute my eyes move from the centre axis of the screen by about 6inches (at around 2 feet away) then I start to see the supposed IPS panel phenomenons. Colours & gradients are gorgeous though!

So I took two quick videos. A pure black background. Screen at full brightness & one with screen at 40% (which is where I like it. I could never use the screen even at 60% brightness - it's too damn bright!)


Now its hard to video but I tried to set the camera exposure to show what I actually see with my own eyes, I can see very slightly more glow with my eyes at 40% brightness than what the camera picks up. And vice-versa at 100% brightness.


Below is a picture of the room with light exposure level to approximate what my own eyes see. This is the room lighting I made the videos above in, so ignore the screen in this pic, its not actually what you see in reality.

screen2.jpg



Last pic is a still of the photo slides screensaver starting. The backlight bleed here in the lower right is representative of what my eyes see at that angle.

screen1.jpg



So my question is this: Is this normal for this screen? Is this a good, average or bad one?
Clearly IPS panels have problems when not looking at the screen head on, eyes at the centre axis. The glass screen does not help matters at at all. Even with the anti-reflective coating, you still get a 'sheen' from the glass.

I've until Wednesday (14 days) to call Applecare for an exchange. I should add that this screen has zero image retention and no dead pixels either...

What do we think?

thanks jay
 
Your statement is a proof of evidence!

Several iMac customers believe: "there is an acceptable level of risk when you buy an 27'' iMac"...That means, there is a "low risk level" to buy an 27'' iMac with LG monitor...

Do you enjoy to replace "under warranty" iMacs till you get a good one?

I am wondering....


Read this link:

https://forums.macrumors.com/threads/1509571/


there are many others..(i.e. yellowish, IR, light bleeding, ghosting etc....check around!) :cool:
 
dublove said:
Concerned at my first real look at an IPS screen I decided to make a quick vid of my screen to see what everyone thinks.

This IPS screen in the iMac definitely has a very narrow viewing angle in all directions. I seem to have found the minute my eyes move from the centre axis of the screen by about 6inches (at around 2 feet away) then I start to see the supposed IPS panel phenomenons. Colours & gradients are gorgeous though!

So I took two quick videos. A pure black background. Screen at full brightness & one with screen at 40% (which is where I like it. I could never use the screen even at 60% brightness - it's too damn bright!)

YouTube: video

40% brightness
YouTube: video

Now its hard to video but I tried to set the camera exposure to show what I actually see with my own eyes, I can see very slightly more glow with my eyes at 40% brightness than what the camera picks up. And vice-versa at 100% brightness.


Below is a picture of the room with light exposure level to approximate what my own eyes see. This is the room lighting I made the videos above in, so ignore the screen in this pic, its not actually what you see in reality.

Image


Last pic is a still of the photo slides screensaver starting. The backlight bleed here in the lower right is representative of what my eyes see at that angle.

Image


So my question is this: Is this normal for this screen? Is this a good, average or bad one?
Clearly IPS panels have problems when not looking at the screen head on, eyes at the centre axis. The glass screen does not help matters at at all. Even with the anti-reflective coating, you still get a 'sheen' from the glass.

I've until Wednesday (14 days) to call Applecare for an exchange. I should add that this screen has zero image retention and no dead pixels either...

What do we think?

thanks jay
Click to expand...

Jay,

I think you've got a beautiful panel and I personally see no issues with it. IPS displays behave this way in a typical use and mine is the say way. It's a trade off. The bleeding on a black screen is offset by vibrant and accurate color throughout the display. You also get a better viewing angle than a traditional LCD.

In the end, you have to ask yourself if this is something you're happy with. The decision is yours, but I would encourage you to keep and enjoy your machine.
 
MikeChicago said:
Jay,

I think you've got a beautiful panel and I personally see no issues with it. IPS displays behave this way in a typical use and mine is the say way. It's a trade off. The bleeding on a black screen is offset by vibrant and accurate color throughout the display. You also get a better viewing angle than a traditional LCD.

In the end, you have to ask yourself if this is something you're happy with. The decision is yours, but I would encourage you to keep and enjoy your machine.
Click to expand...

Your decision isn't correct! Photos present a serious light bleeding problem and the owner should return it "under warranty". IPS technology suffers from many problems but this isn't a minor issue to accept....this is my opinion.

Read similar problems in other threads by 27'' iMac owners...
 
Panel looks great to me. The black off-axis brightness is inherent in all the iMac panels, and if you've got no image retention or other issues, that really looks VERY good.

DO NOT exchange it. If anything, buy a second from the store if you don't believe me (14 days to return it). But if you have a good panel like this, you'll not want to give it up.

Just my $0.02.
 
Interesting guys, thanks for the comments.

I thought of a simple trick to show the difference between ips glow/sheen & backlight bleed. Simply take two sheets of opaque paper hold them on the screen and use them to create a 'corner' frame anywhere on the screen. Try right in the middle. Move your viewing angle and you'll see the ups glow/sheen exactly the same as in each physical corner of the screen. Strange huh, because when looking at the same spot without the paper frame you don't see it.

:)
 
I haven't seen that bad of backlight bleed except in really cheap panels. I'd exchange until you get a good one.
 
dublove said:
Interesting guys, thanks for the comments.

I thought of a simple trick to show the difference between ips glow/sheen & backlight bleed. Simply take two sheets of opaque paper hold them on the screen and use them to create a 'corner' frame anywhere on the screen. Try right in the middle. Move your viewing angle and you'll see the ups glow/sheen exactly the same as in each physical corner of the screen. Strange huh, because when looking at the same spot without the paper frame you don't see it.

:)
Click to expand...

Weird, indeed.

I haven't tried it, but I get the impressing that you are slightly OCD and maybe looking a little too hard to find problems with the display. I can relate though. The only suggestion I have is to relax and have a drink. Tomorrow the screen will look much better :D
 
I'd like to track where shipments are coming from where iMac's are having prooblems. Mine is coming from Fremont California.

What about yours?
 
Well mine came from Ireland as i'm in the UK.

I went into the Apple Store today to quickly check out the iMac displays there. Well the one on display was much better. It had the tinniest bit of bleed in the bottom left but i mean tiny. It is rather well lit in the store though.

BUT at 100% brightness it was better than mine at 40%!

So now that i've seen the light (of lack of it on the store model) I called Applecare when I got home - they want me to bring the iMac down to the store... We'll see what they say.
 
dublove said:
Well mine came from Ireland as i'm in the UK.

I went into the Apple Store today to quickly check out the iMac displays there. Well the one on display was much better. It had the tinniest bit of bleed in the bottom left but i mean tiny. It is rather well lit in the store though.

BUT at 100% brightness it was better than mine at 40%!

So now that i've seen the light (of lack of it on the store model) I called Applecare when I got home - they want me to bring the iMac down to the store... We'll see what they say.
Click to expand...

What you're seeing in store is not at all representative of what you see at home. Ambient light hides bleed VERY well.

You're more than welcome to try exchanging it etc etc, but I can't help but think it's not worth it, going by the pictures you posted.
 
dublove said:
Concerned at my first real look at an IPS screen I decided to make a quick vid of my screen to see what everyone thinks.

This IPS screen in the iMac definitely has a very narrow viewing angle in all directions. I seem to have found the minute my eyes move from the centre axis of the screen by about 6inches (at around 2 feet away) then I start to see the supposed IPS panel phenomenons. Colours & gradients are gorgeous though!

So I took two quick videos. A pure black background. Screen at full brightness & one with screen at 40% (which is where I like it. I could never use the screen even at 60% brightness - it's too damn bright!)

YouTube: video

40% brightness
YouTube: video

Now its hard to video but I tried to set the camera exposure to show what I actually see with my own eyes, I can see very slightly more glow with my eyes at 40% brightness than what the camera picks up. And vice-versa at 100% brightness.


Below is a picture of the room with light exposure level to approximate what my own eyes see. This is the room lighting I made the videos above in, so ignore the screen in this pic, its not actually what you see in reality.

Image


Last pic is a still of the photo slides screensaver starting. The backlight bleed here in the lower right is representative of what my eyes see at that angle.

Image


So my question is this: Is this normal for this screen? Is this a good, average or bad one?
Clearly IPS panels have problems when not looking at the screen head on, eyes at the centre axis. The glass screen does not help matters at at all. Even with the anti-reflective coating, you still get a 'sheen' from the glass.

I've until Wednesday (14 days) to call Applecare for an exchange. I should add that this screen has zero image retention and no dead pixels either...

What do we think?

thanks jay
Click to expand...

I think my question really becomes... how did you get your screen to do that... :/
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back