The exposure was set via Magic Lantern ETTR at 1/200s. I had Dual-ISO switched on at 100/1600 and the aperture was set at f/8.
I set the lens to the minimum focus distance of 280mm and let my auto focus bracketing script do the rest.
After processing the Dual-ISO in Lightroom, I sent three images over to Photoshop and used layer masks to blend the images, after first auto aligning.
After returning to Lightroom, I finished off the image, including selectively using the new texture slider both positively, for the field, and negatively, for the sky.