I just spent three days in Milford Sound, New Zealand. This is about a four hour drive from my house. The bad news was there were no clouds for sunset. The good news was there were no clouds for star shots that night! Cliff and I stayed out there quite late to make sure we got all the shots we wanted! For this one, I tried attaching the Nikon 16mm f/2.8 prime via an adapter to my Sony A7r — it was very easy and worked like a charm!