Day Two Hundred Fourteen. August 1. Picture # 214. "Dust". Today's picture is somewhat unusual. As I drove down a dirt road today, I turned around to see this scene. The fine white dust from the limestone gravel that had been stirred up by my truck, just hung in the air. The bright afternoon sunlight caused the dust to glow and acted as a filter given everything a soft focus. Canon Rebel XTI, handheld. Canon 75-300mm lens. Focal length 75mm. f/5.6. ISO 800. Exposure 1/400 second.