.5 seconds at f/5.6 and 17mm
I definitely went through some Photoshop heroics to pull this one together.
I blended separate images for the foreground and sky--the range of the scene was too big to capture in a single exposure. After some editing, there's about a 3.5 stop difference between foreground and sky.
There's some barrel distortion here, so the horizon is ever-so-slightly curved. This meant I couldn't use a simple gradient to blend the exposures. Instead, I created a selection of the sky and used the Select -> Refine Edge tool to blur the edge, then created a layer mask from the selection. Good Photoshop practice!
One issue I ran into, though, was that I made a crop and then continued to make a bunch of other edits. I'm used to being able to go back and tweak the crop in Lightroom, but in Photoshop it seems to be permanent. Any suggestions anyone? I guess I should have waited till the end to crop!
The original, unedited foreground and sky.