Camera megapixels: Why more isn't always better

A 16-megapixel smartphone camera sounds great, but an 8-megapixel shooter could still produce better pics. In a matter of months, the high-end smartphone camera spec rocketed from a respectable 8 megapixels to an altitudinous 13. The Samsung Galaxy S4 and LG Optimus G Pro are the freshest examples of this megapixel push, but even last January's Pantech Discover (12.6 megapixels), last October's LG Optimus G for Sprint (13 megapixels), and especially mid-2012's Nokia 808 PureView, a 41-megapixel stunner that's worth the hype for photography fans. Yet even though the technology exists, quality can be just as uneven from phone to...

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