“That the light of Venice differs from that of any other place there can be no doubt, but to discover precisely how it differs is a task that has baffled both writers and painters. (It is worth noting that, whereas most of the best paintings of Rome are by foreigners to the city, only the Venetians have been able to capture the atmosphere of Venice: even Turner and Monet failed, hard though they tried).
It is not, save on fine winter days, a particularly clear light and never as sharp as that of Greece. Usually it is slightly powdery and at evening can take on a rare apricot tinge. One of its peculiarities is that the intensity seems to derive as much from the horizon as from the sun – the result no doubt of reflection from still waters. I, for one, am prepared to leave it at that and accept it as a mysterious enchantment, for mystery is the essence of poetry.”
Hugh Honour, The Companion Guide to Venice