I did mean to put the second up as a thumbnail - to show setting . . It was tracking the swans through the colours on the water that really attracted me. The tree worked well in other longer views.
No worries, Fangman, I understood right from the start, and without needing to read your explanation, that Photo 2 was only put up to show us the context in which Photo 1 was created, and I am grateful for your letting us see what it was that made the water reflect as golden as it did at the time.