1 - For a quick "soft focus" filter, breathe on the front of the lens (or front filter). For a longer lasting effect take the lens off the camera, breathe on the rear lens element, and put back on the camera.
2 - Blow out a burning candle and place a UV filter over the smoke so it settles on the filter. It's pure carbon, lampblack so it can be easily removed with a tissue later.
