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Old Nov 5, 2012, 03:01 PM   #1
macrumors 603
Join Date: Mar 2008
Location: Seattle
I believe the iPad 4 has a serious display flaw.

So I've tested this and repeated it on two different iPad 4s from two different Apple Stores.

Here is the issue:

I use Plex and Air Video to stream video from my home server. Nothing too strange about that. I also watch trailers in Safari. Nothing too strange about that, either.

However, I've noticed that during videos where there are dark scenes, the iPad 4 contrast is constantly "pumping" itself up, and then dimming back down. It's unbelievably distracting. Even stranger, if the contrast pumps itself up and at that point you close the app/Safari, the entire home screen looks completely over-saturated until it, too, gradually brings its contrast level back down.

I know I'm probably not doing a great job describing this. This also happens when viewing videos in Safari.

Test for yourself!

e.g. if you go to this website on your iPad 4 to view The Dark Knight Rises trailer...


Tap on Trailer 4:

At 13 seconds into the trailer...

Here is a screenshot of where it happens most noticeably.

Thumb resize.

Test Method:

The EASIEST way for you guys/girls to test this to simply PAUSE the video at 13 seconds, (make sure the video is FULL SCREEN and that the controls are HIDDEN) and simply watch your contrast change after 3-5 seconds. When the contrast changes, you can hit the Home button and now look at your messed up icons! After a few seconds, your Home screen icons will go back to normal (the FaceTime icon especially looks terrible until then). Make sure the video is full-screen!

I'm not sure what's going on here, but it literally makes it impossible to watch movies with dark scenes on the new iPad 4. The contrast switching is incredibly distracting, and an issue simply not present on the iPad 3.

I'm now heading back to the Apple Store with this second iPad. Is this something Apple can fix? I'm not sure. There's some very aggressive contrast management going on here it appears. But it doesn't work.

Call me a sad panda.


Easiest method for testing is max backlight in a dimly-lit room. It's easy to see the contrast changing this way.

Here is an EXPOSURE-LOCKED video from my iPhone 5 showing the contrast pumping. This happens ALL the time when watching a video with dark scenes.


And here's the byproduct of closing a video when the screen is black. Again the exposure is LOCKED. You can see how the contrast is all blown out until it calms back down. This below video is NOT a major complaint, but is happening due to the issue above.




Will add to this list above as I get more people uploading videos.


List of apps this "bug" affects:

1.) Safari browse
2.) Apple's Videos app
3.) Plex
4.) Air Video

List of apps that do not experience this "bug":

1.) AVPlayer HD
2.) Netflix
3.) It's Playing
iMac, MacBook Pro, MacBook Air, Mac mini, iPad, iPhone, Watch, Time Capsule. 55-11

Last edited by WilliamG; Mar 5, 2013 at 05:30 PM. Reason: Please use [timg] tags for large images.
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