Fog works best when you use it for mood, depth, and light beams rather than trying to fight its low contrast.

Good subjects include lone trees, forest canopies with filtered sunlight, shorelines, islands, bridges fading into mist, buildings disappearing upward, and city lights or spotlights glowing through the fog. Silhouettes can be especially effective, and backlighting people or objects can create dramatic shafts of light.

In cities, try shooting at night when street lamps and headlights diffuse beautifully in fog. In nature, look for layers of trees or landscape elements gradually fading into the mist, or shoot from above the fog if you can find elevation.

Exposure-wise, fog can fool the meter into underexposing, so exposing a bit brighter can help. ETTR can be useful, but moderately. Don’t worry if the scene looks low-contrast—that’s part of the atmosphere.

If the light is low and the fog is temporary, a fast lens can help you work handheld. Otherwise, a tripod is useful for slower shutter speeds.