We pitched our tent in Wyalusing State Park, Wisconsin this weekend and were rewarded with wonderful and sunny fall weather. Located at the confluence of the Wisconsin and Mississippi rivers, the bluffs and valleys of Wyalusing belong to the same drift-less area we call home. The leaves just started to change colors although many are still green. The air was crisp and clear, other than the haze we see often during the summer, and this gives the light a different quality. I wanted to challenge myself and took only one prime lens with me during our hikes in the park, the SIGMA 150/ f2.8. My older version of this lens is a little slow with focus, but this doesn’t play a big role when hunting for light and colors in the woods is the goal.