I recently found about a new DIY filter that produces some interesting results (from other photographers!). It turns out, if you put a piece of welding glass in front of your lens, it acts as a very affordable neutral density filter. Basically, you can shoot in daylight while doing long exposures. I've heard this looks best with clouds, water, and for removing people from a busy downtown scene. Since we have one of the three out here in west Texas (clouds), I went out to one of my favorite (and first) ghost towns, Penwell, to try some test shots. The clouds were not great, but I figured since I wasn't doing anything else...