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klover

macrumors 6502a
Original poster
Jun 7, 2009
802
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Had to swap a few Ipad Air 2 units to find one without yellowing/tint, bleed, and bookspine effect. Curious to hear evaluations of screen quality and uniformity?
 
Mine is good, but I wish that it was brighter. It's not that it's dim, but due to the size, it's even more likely to be used off angle and that is a major brightness penalty.
 
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I picked mine up yesterday and used it all night and returned it this afternoon. The display on mine was perfect. Excellent tone and brightness. The size was just too big. I'm sure there'll be some tweaks in iOS 9 to take advantage of the larger display size like on the 6s plus. Bottom line: the screen was perfect: no stuck pixels or defects that I could notice.
 
I'm surprised nobody discovered the following:

- Most iPads are slightly darker with a yellow/green hue on the top centre of the display (by the front camera)
- Most iPads have dark right corners (in portrait view), only noticeable on or under 50% brightness
- Most iPads have a tint shift in landscape (Home button on right side) from warm to cool (left to right)

The uniformity isn't terrible as most of my friends couldn't see what I see. With my pristine eyes, I have yet to see a perfectly uniformed iPad pro. I don't think they exist :(

dL
 
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Mine is perfect. I was *that girl* in the store last night setting it up, inspecting it closely from all sharp angles to look for backlight bleed, doing a pixel test, etc. All good to go! No dead pixels, no yellowing, no uneven lighting, no backlight bleed.
 
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I have yet to see a perfectly uniformed iPad pro yet. I don't think they exist.

A perfectly uniform LCD panel doesn't even exist, so it's not going to happen. The higher the density/resolution and more constraining the other parameters are the more likely it is that you'll have uniformity variance. Displays for professional use that claim very little uniformity variance are generally really expensive because they essentially have to hand-pick panels off the line to make that possible.
 
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A perfectly uniform LCD panel doesn't even exist, so it's not going to happen. The higher the density/resolution and more constraining the other parameters are the more likely it is that you'll have uniformity variance. Displays for professional use that claim very little uniformity variance are generally really expensive because they essentially have to hand-pick panels off the line to make that possible.

I know I was hoping for some magic to happen with this advanced display Phil claims to be uniformed during the keynote lol. I'll keep dreaming haha

dL
 
The Apple store demos looked fine minus inability to check for backlight bleed in a dimmer environment but I'm sure they go through the LCD lottery to put out their best from the lot.
 
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The one I tried was very good other than being darker than either of my iPads mini and Air2. With full brightest set, it was legible and clear.

I do think iPad Pro sales may help offset the lackluster watch appeal. Unlike the gimmick like watch the iPad Pro offers full functionality.
 
So the main issue with the iPad Pro display is a poor off-angle viewing response. If you set a white screen and angle the display just slightly, then you will see colour tints. Because you use the Ipad pro quite close to your eyes, in portrait mode, it is actually impossible not to have some level of colour tint visible simply because you are looking up to the top part of the screen and looking down to the bottom. It looks more linear in landscape. This effect seems to be reduced the brighter the display is set to.

At first I was horrified thinking I had a very non-uniform screen. A while later I realised it is actually fine and the issue was that I was using it in a dim room on low screen brightness in portrait. After doing some more evaluation it is, so far, uniform, but the viewing angle colour shift changes are bigger than I would have hoped.
 
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I've used two IPP now and the displays on each are excellent, far better than the Air 2 in colour and uniformity. The display on the second IPP I got is maybe a hair better than the first as the uniformity in the corners is almost perfect.

I haven't really felt there is an issue with shifting when viewing, and actually the IPP has an amazing "display slab" look because it is so consistent edge to edge.

Not being able to calibrate the display on a device like this is an issue, certainly the white could be set better and the gamma increased on mine.
 
How's the back light bleed? One of the things I couldn't test in-store.
 
My Gold 128gb Pro is outstanding. Perfect white and no bleeding with black. Like watching a 4K hd display in your hands. I own two Air 2's and after 1 hour of Hulu watching on the Pro, I don't know if I can look at my Air 2 the same way again. Even my wife thinks the resolution looks more crisp on the Pro over the Air 2 even though they are the same.
 
... Even my wife thinks the resolution looks more crisp on the Pro over the Air 2 even though they are the same.

I get the same impression. I wonder if maybe the display on the Pro has more contrast or more brightness than the Air. I don't know the terminology for displays, but even with the same pixel density, brightness could be different. Also, though the pixels mper inch is the same, any given picture has more total pixels. Put it this way: If you took a high-resolution picture of a foot ruler and then displayed it on an iPad Air and on an iPad Pro so that the ruler took up the full screen width on each, the larger size would mean that the Air has more pixels for each inch along the ruler in the picture. That would (?) make the picture look sharper.

Whatever the reason, maybe it's that, maybe it's a brighter screen, or maybe it's just an illusion or a trick of the brain, the Pro really does look sharper to me.

OTOH, board games and card games feel nicer on the iPad Air. Those don't need the large size and feel more natural on the smaller screen. I play chess on the Shredder Chess app (5-star app, BTW) and it's easier to get the feel of the board on the smaller screen of the Air, which in turn is better than the slightly-too-small iPad Mini.

On another note, this morning it looked as though there were a lot of irregularities, sort of waves, in the screen when I held it up at an angle to the light in a dark room. So I washed the screen, and those disappeared. I've been smudging it with my fingers. Note to self to keep the screen clean. Is there a "best" way to wash the screen?
 
Perceived sharpness can be just as much about contrast as it can resolution and ppi. No measurement comparisons are yet available but I would suspect the contrast is considerably higher.

As per another thread though, the "white" varies from unit to unit with some more yellow and some more blue. Still no manufacturing fix for giving us all proper D65 screens out of the box.
 
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