I'm going to do a science fair experiment about measuring skyglow, but I need to be able to change my shutter speed to 30, 15, 8, 4, 2, 1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, and 1/1,000 sec shutter speeds.
Read more: How to change shutter speeds on Nikon Coolpix l830?