I love living in Auckland too
Well done and a good start to landscape photography.
Btw, What is that artifact (flare?) at bottom left corner?
Thanks! that flare might be caused by the GND filter. I have mounted the rectangle 2-stop GND filter on the lens, which is made by resin and is uncoated. Funny thing is even with the filter the dynamic range is still too high for a single shot. Might worth to try 3 or 4 stop reverse GND but I don't have then!
Also I took couple of dozen shots, only this one turned out to be within the 5 minutes sunset window. All the rest are uninteresting photos with either white light or dark blue ones. One thing learned: shooting sunset you have to act fast! 5 minutes best time per day that is also not cloudy/rainy!