The most difficult aspect of capturing this sunset image was being there. Once in location, wait until the sun is nearly set behind a distant mountain, use an f/16 aperture to create a sunstar (but not lose too much sharpness to diffraction), select a shutter speed that nearly blows the red channel at ISO 400 (I had been running and did not have a tripod), compose for the foreground, sun, and clouds, focus roughly 1/3 into the frame, press the shutter release, and get that great feeling of knowing that a beautiful scene was part of the evening's take-home.
On this mid-July evening, I timed a trail run with the sunset and the clouds and slightly hazy summer sky cooperated to provide great color. The Sony FE 24-70mm f/4 ZA OSS Lens, small and light enough to not pose a physical limitation, was also getting a workout. This lens has the core general-purpose focal length range needed and it handled this scene nicely.