Finger MethodSometimes you will find that your images are rather fuzzy even you use a tripod. It is because every time you open and close the shutter, you "shake" your camera, especially when the needed exposure time is short, e.g less than one second.
It may help if you can have our cable release adaptor. However, you can make good photos even you don't have our cable release adaptor.
To advoid the shaking of your camera, you can first open the shutter and hide the hole as fast as you can with your finger. You better open the shutter under shade area. Then remove your hand so as to let the film to be exposed. When the time is up, hide the hole again with your finger and then close the shutter under shade.