I bought a Nikon D3100 a year or so ago and have had an issue I don't remember with other cameras. On really bright flames, I get a darkened region of sky in the area immediately surrounding the flame. Has anyone else had this issue? Is there a solution through changing the settings or something? Effect was really visible on Vern Knowles's flight at NXRS last month. I use a circular polarizer, if that's relevant.