So, here are some pictures, taken tonight, of my
iPad 3rd generation retina screen.
1. On the first picture, you may find the screen "kind of uniform". This is a fullscreen neutral grey image. The left side is a bit warmer compared to the right side of the screen. But this doesn't seems
dramatic from this image... right?
Image
2. Now, this is a simple grey chart, but it display clearly the lack of uniformity of the panel. Just compare the top left area and the low right area (from 100% white to 4th grey level for example...). It should display the same colors, but it's clearly different. Top left is warmer. The screen is definiely
not uniform, and far from that in my opinion...
Image
3. Another try, with a different grey chart. The tint difference is obvious here! Just compare the top left and bottom right chart (100% white to 50% grey).
Image
4. Last image. The
direct comparison between top-left and bottom-right of my retina panel. Not sure we can call this uniform...
Image
If some of you can use these two grey charts on their own iPad 3rd gen panel, it may help to get an idea of the problem. Just a personal advice when shooting these charts on your iPad screen:
- use a fixed white balance mode (to avoid differences between pictures...)
- lock exposition (also to avoid differences between pictures...)
- lock focus
Thanks!