Not that the iPad is much good outdoors anyhow, but if you're like me and wear prescription polarized sunglasses, you may find that the screen goes black in portrait orientation while viewing through the sunglasses. Not a deal killer, but annoying nonetheless.
The iPhone doesn't present this problem. Oddly, the 27" iMac doesn't either, but the 20" does, at least with my shades.
The iPhone doesn't present this problem. Oddly, the 27" iMac doesn't either, but the 20" does, at least with my shades.