This bit of camera gossip dates back to last year: Apple reportedly will add Philips' "smart flash" LED to the iPhone. The original rumor stated the iPhone 5 might incorporate the technology, which didn't happen. The current scuttlebutt says the iPhone 5S will feature Philips' advanced LED flash. So what is it? Details are scant, but AppleInsider reports the technology is a multi-color LED flash that detects ambient lighting and adjusts itself to avoid over-exposed images.