Why the tower has to be the brightest thing in the frame — and not the only thing

Blue hour lasts about twenty minutes, and it is the one time of day when a tower can win an image without shouting. The sky has dropped to a deep even blue with no sun left in it, and the building is lit from the inside — every window a small lamp. That is the whole trick. The tower becomes the brightest object in the frame because it is the only thing generating its own light.

The mistake is to stop there. We see a lot of blue-hour work where the tower glows and everything around it has been dimmed to a flat dead grey: a lit model on a black table. Nobody believes it, because a real marina at twenty to eight is full of competing light — the towers behind, traffic on the corniche, boats, a lit sign somewhere off frame. We kept all of it and simply made sure ours sits about a stop and a half brighter than its neighbours.

Brightest thing in the frame, not the only thing. If a buyer can find the tower in half a second and still recognise the marina they already know, the picture has done both of its jobs at once — and it has done them without lying about the city.