Apple iPhone 3GS gets HDR photo update
iPhone 3GS users get a much-need camera upgrade
Whatever your stance on the Big A's line of iPhones, one area where they've never "changed everything" is in the camera department. Even the latest incarnation, the iPhone 4, only packs a decidedly average 5MP sensor, lagging far behind upcoming competing products from HTC and Nokia.
HDR (or High Dynamic Range) imaging on iPhone works by taking two photos of a scene one after the other. One photo is overly dark, the other overly bright, and the resultant photos are then merged together, cherry picking the best lighting from both originals. The result is more balance in light levels in the photo, soving the problem of a taking photos with pronounced areas of light and darkness.