Camera megapixels : Why more isn't always better

Just days ago, Samsung announced the Samsung Galaxy S III, the global, quad-core, Android Ice Cream Sandwich successor to its best-selling smartphone ever, the Galaxy S II.CNET readers' reactions were mixed, with several comments that the 8-megapixel camera didn't seem too hot.Rumors of a 12-megapixel camera leading up to the announcement were partly to blame. It's no wonder that some felt that a perfectly good 8-megapixel spec was taking a step back, especially with the 16-megapixel shooter on the HTC Titan II out in the wild, and Nokia's 41-megapixel 808 PureView, a Mobile World Congress stunner.

Time-shifting BlackBerry camera makes pictures perfect.Despite the fact that 8 megapixels is pretty standard for a high-end smartphone camera these days, one CNET reader described the Samsung Galaxy S III's camera as "so last year." Never mind that at least one high-end phone, like the Samsung Galaxy Nexus, still touts a 5-megapixel camera.It isn't that 5-megapixel cameras can't be good, even better than phones with an 8-megapixel count lens; or that we're due for another bump along the megapixel scale. It's that to many shoppers, 5 megapixels just doesn't sound as good as 8, even if the camera produces terrific, knock-your-socks-off shots. And well, if 8 is good, then 12 is better.

The dirty secret lurking behind today's 8-megapixel yard stick for high-end status (and what any photography nut will tell you) is that the megapixel number alone is a poor way to predict photographic performance.For instance, the original Samsung Focus took some lovely shots on its 5-megapixel camera, while the Motorola Droid Razr's 8-megapixel lens creates disappointing pictures. And the 5-megapixel camera on Apple's iPhone 4 beat out some 8-megapixel cameras on the market and delivered good low-light results.Of course, that's not to say that bigger can't also be sometimes better. For instance, HTC's One X high-performance 8-megapixel smartphone camera boasts rapid shot-to-shot action, and its Titan II takes 16-megapixel shots of solid quality.