The spot metering function on my camera seems to have stopped working. When you choose spot metering mode in the camera and use your finger to point at a bright object on the edge of the screen, the exposure does nothing. Samsung tech support confirmed that the exposure is supposed to be adjusted to that spot that you touched but it doesn't do it on my S3. It used to work but just stopped a couple of weeks ago. What's even stranger that some S3's seem to work fine but others also don't work - I tried whole bunch of them today in various stores and some work just fine but others don't work at all.Is yours broken?