Yesterday I wanted to see the performance of my newly purchased EF 50mm f1.8 II and took a few shots. I am disappointed. Mounted my 40D on a tripod with cable release and I played with different settings in bulb mode, 1 exposure, Av mode with wide open f1.8, Tv mode, etc. Dont know why I am seeing those unwanted spots and Reflections. I marked with Red pen on the pictures. My 50mm lens has a UV filter on it. No other filters. I cleaned up the outer surface, made sure no dust. I didnt get a chance to change lens to my 17-55mm, take same shot that way I know does it need a sensor cleaning? Any suggestions what could have gone wrong? Picasa Web Albums - Phani - EF 50mm night... Thanks.