I used a bumper (a thicker version - SGP Neo Hybrid 2 EX) and just noticed there are a few tiny scratches on the camera. Since then I've switched back to full case. I always put the phone in my front pocket with nothing else in it. Apparently even a tiniest bit of dirt is enough to scratch the lens. I'm used a full case before the bumper so I'm not sure whether the scratches came at the time or after using the bumper. But logically using a bumper there is a lot more chance of scratching. If you put the phone on a flat surface naturally the bumper protects the camera. But if you put the phone in your pocket or any uneven surface, all bets are off. So I ask the question: do people not care at all, as long as the phone looks good?