In this tutorial we learn how to take photographs using bulb photography. First, set your mode to manual and then you can adjust your shutter speed to thirty seconds. Once you go down this far, you an go into bold mode. When you hold down the shutter in this, it will constantly take this picture until you remove your finger. But, you don't want to do this for an entire 20 minutes. The easiest way to do this is to buy a remote control for the camera. This will allow you to press the shutter one and then press it again when you are finished. If you don't have this, put a rubber band with an eraser over the shutter and you don't have to hold it down!