Golden Hour Exposure Calculator
Golden hour, blue hour, and twilight photography require significant exposure adjustments compared to daylight shooting. As the sun descends, ambient light decreases by approximately 4-8 stops compared to midday. This calculator takes your known midday exposure (shutter speed, aperture, ISO) and the estimated EV change for your target time of day, then shows the adjusted shutter speed needed to maintain correct exposure at the same aperture and ISO.
EV adjustment formula
New shutter (s) = base shutter (s) x 2^(EV stops reduction)
Example: base 1/500 s (0.002 s) at midday. Golden hour peak at -5 EV: new shutter = 0.002 x 2^5 = 0.002 x 32 = 0.064 s = about 1/15 s. Blue hour at -7 EV: 0.002 x 128 = 0.256 s.
Golden hour EV reference
- Midday bright sun (Sunny 16): EV 15
- Golden hour, sun 10 deg elevation: EV 12
- Golden hour, sun at horizon: EV 10
- Blue hour (5-20 min after sunset): EV 8
- Twilight, horizon glow: EV 6
- Dark night sky (no moon): EV -3 to EV 0
Golden hour exposure: frequently asked questions
What is golden hour and how does it affect exposure?
Golden hour is the period shortly after sunrise or before sunset when the sun is low, creating warm, soft directional light. The ambient light level drops approximately 4-6 EV compared to midday, requiring significantly longer exposures, wider apertures, or higher ISO values.
What is the typical EV at golden hour?
A sunny midday scene is about EV 15 at ISO 100. Golden hour (sun near horizon, clear sky) is typically EV 11-13. Blue hour (just after sunset, sky still bright) is EV 9-11. Twilight (last light in the sky) is EV 6-9. Full darkness (stars only) is EV -6 to EV 0.
How do I calculate the new exposure from an EV adjustment?
Each EV change corresponds to one stop. A 1-EV decrease halves the light, requiring either a 1-stop wider aperture, 2x shutter speed, or 2x ISO. An EV adjustment of N stops changes shutter speed by a factor of 2^N (if aperture and ISO are held constant).
Should I change aperture, shutter, or ISO for golden hour?
Golden hour light is directional and soft, so wide apertures (for shallow depth of field and subject isolation) are often desirable. Increase ISO if handheld; use a tripod and longer shutter speeds for landscapes. Many photographers use their base ISO and widen aperture first, then extend shutter, then raise ISO.
How quickly does the light change during golden hour?
Light changes by about 1 EV per 5-15 minutes during golden hour, and faster near the horizon. This means you may need to adjust exposure every few minutes when shooting close to sunrise or sunset. Bracket exposures or use auto-ISO for faster adaptation.
Official sources
- NOAA Solar Position Calculator (sunrise/sunset times reference). NOAA.gov.
- ISO 12232:2019: Photography, Digital still cameras, Determination of exposure index. ISO.org.
Reviewed by the CalculatorHub team, edited by James Graham, 15 June 2026. See our methodology.