i was wondering how to use the slow shutter speed in order to take light painting pictures. the only way i can set the shutter speed is by going to the "starry sky" setting. and the lowest shutter speed is 15 sec. also i have to set the timer so that i can walk in front of the camera to get the ghost like effect and i don't know how to make the shutter speed slower than 15 sec. pls help!