Ok, I took some pictures the other night and some pictures had that a "fog" in it but not others. A picture from that night: Everything was ok... This was a picture from the same night... Although I did use a flashlight in that one.. The next day I decided to finish the roll and decided to use the bulb feature in broad day light on passing traffic, the same thing happened.. Here: My question is, could a light leak develop half-way though a roll?