In the parking lot outside my office. I ran out between passing rain clouds. Just before I hopped into my friend's car I pulled out my camera, swivelled the aperture to f8 and took the shot so quickly that I figured it would be an irreparable mess when I got it home. All camera shake and missed opportunities. But no! I took a look, did a black and white conversion and poked at the contrast curve until the detail in the sky began to resemble what I'd seen in passing. Taken with my Fuji X100s on Aperture Priority.