Let's say you (I) have an el-cheapo tripod without shutter control. So everytime you want to take a picture that has a long exposure time, you're afraid of shaking the camera from pressing the shutter release button and then letting go of the camera. It shakes inevitably. So what to do? Why didn't I think of this before? Set the camera on auto-delay timed shooting. Set everything up and then just press the button and let go. It's a bit slow but it'll eliminate the shake of your hands. Low budget work around!