Soon after purchasing my Nikon D90 in 2010, I was keen to try my hand at some long exposures. I started playing around in the dark garage, using a tripod, flashlights and laser pointers. I then decided to try my hand at some incense smoke photos, without really having a clue what I was doing. I set up a flashlight on the floor below a stick of burning incense and started snapping away. I immediately had trouble trying to focus….