My 5d111 has got a mind of its own, I dont think it's supposed to do this. When I have it set on TV it sets its own ISO, even though I had it set to 200 it over rode the setting and went to 12800. I realise if I'd kept it on 200 the shot would have been too dark, but that's not the point, I DID NOT have the ISO set to Auto and yet it behaved like I did. Is this a fault or is it working as it should. I tried it on AV and the ISO remained set on what I chose, so it just seems to be on TV. Is my camera sick?



