Field notes on coastal fog, light and long walks.
The fog sat at about three hundred metres all morning and never burned off. From the ridge the bay was a flat white floor with two radio masts sticking through it. By four it had crept up the canyons and the trail was wet again.
Warm air inland rises during the day and pulls cool, moist air off the ocean behind it. Once the sun drops the layer stops thinning, so the fog that was hanging offshore all afternoon rolls in within an hour.
Expose for the brightest part of the fog and let the shadows fall where they fall. A lens hood helps more than any filter, because the droplets on the front element are what ruin the contrast.