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Light Lab 39.46° N, 82.63° W, 40 mi from Columbus, United States

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Light Lab · the evening of Apr 18 from 39.46° N, 82.63° W, looking WNW

Sunset

8:09 pm

Sun −0.4°Light about 2,700 KShadows endless

Golden 7:35 pmSunset 8:09 pmDark 8:39 pm

Shadows

×5×10NESW

Pointing east-southeast, as long as the light reaches.

How high the sun is

GoldenBlueLevel horizon7:05 pm8:59 pm

The color of the light

Daylight ~5000 KSunset ~2600 KBlue hour ~10,000 K

The sun is down but the sky still glows: soft, even, rosy light.

Starting settings, when it matters

7:35 pm–8:09 pm · golden

Daylight white balance (about 5500 K) keeps the warmth. Meter the sky beside the sun, not the sun.

8:09 pm–8:28 pm · afterglow

8:28 pm–8:39 pm · blue

Tripod. f/8, ISO 100, about 2 s to start, 8 s by the end. Daylight white balance keeps the blue.

Terrain: Mapzen terrain tiles (SRTM and others)

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