IPad, 2 have already been through dozens of reviews since its inception, but none of them is as scientific as this. The guys over at DisplayMate has compared the tablet in 1024 x 768 pixels screen of the iPhone 4 retina display and iPhone 3GS modest HVGA screen.
Here are some of the more interesting findings of the review-iPad, 2 display has a maximum brightness brightness 410 cd/m ^ 2, which is pretty good, but not quite as impressive as 541 cd/m ^ 2 iPhone 4, and also one of 428 cd/m ^ 2 in 3GS.
But the black iPad, 2 is the deepest of the trio of 0.45 cd/m ^ 2 (iPhone 4 got 0,48 cd/m ^ 2 and the 3GS 3.1 cd/m ^ 2), which gave it a contrast ratio of 962: 1. It is almost seven times better than 3GS but not quite as good as the iPhone 4. Still both iPhone and iPad, 2 4 drew excellent speech, their LCD light.
The color temperature of the iPad, 2 also said to be lower than 4 so that colors appear slightly warmer in Slate, compared to the smartphone of iPhone.
Apple iPad, 2 vs iPhone 3GS vs iPhone 4 show shootout results table
Which angles are concerned, all three tested units lost more than 50 percent of their brightness in 30-degree viewing angle, but still had pretty good contrast when the iPad, and iPhone 2 4 (564 and 556 respectively).
Finally, the measured power consumption of different reviewers screens. IPhone 4 was found to have at least power at maximum brightness (0.42 Watts), while the iPad, 2 was sucking 2,7 watts. If you level the field by setting up both to the same brightness, and split the consumption in the iPad, 2 through the crowd that its screen is bigger then iPhone 4, give you a fairly similar energy efficiency but (0.32 watt for phone vs 0.34 Watts for tablet).
And it's a pretty good indicator of how Apple made when comparing iPhone 4 to 3GS. HVGA screen of the previous generation smartphones require almost twice the power of its successor.
Check the full iPad, 2 screen review by following the link source below.
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