Try a dawn excursion to beat the crowds, watch light spill over the caldera
https://guide-varna.com/xenagisi-sti-santorini-me-ntopio-odigo-o-pio-exypnos-tropos-na-deite/
Try a dawn travel to overcome the crowds, watch faded spill over the caldera, and capture serene streets in the past the island wakes up.