Time-Lapse Masterclass
How to Calculate Time-Lapse Intervals & Shooting Durations
Creating a fluid time-lapse video requires precise mathematical planning. Knowing your shooting interval, target framerate, and playback length in advance ensures you never cut a stunning sequence short or fill up an SD card halfway through a sunset.
| Subject / Scene | Recommended Interval | Typical Event Duration | Key Camera Setting |
|---|---|---|---|
| Fast Moving Clouds | 1 – 2 seconds | 15 – 30 minutes | Shutter at 1/2 interval (0.5s with ND) |
| Golden Hour Sunset / Sunrise | 2 – 4 seconds | 45 – 75 minutes | Aperture Priority (A/Av) with Auto ISO |
| City Traffic & Light Trails | 1 – 3 seconds | 20 – 40 minutes | 1s – 2s long exposure for smooth light streaks |
| Milky Way Night Sky | 20 – 30 seconds | 2 – 4 hours | Full Manual (M), wide open f/2.8, ISO 3200 |
| Blooming Flowers / Plants | 5 – 15 minutes | 24 – 72 hours | Constant AC power adapter required |
What is the basic time-lapse interval formula?
To calculate how many frames you need: multiply desired video length in seconds by your playback framerate (e.g. 15s × 24 fps = 360 frames). To find total shooting time: multiply total frames by your interval (360 × 3s = 1080 seconds = 18 minutes).
How do I prevent time-lapse flicker?
Flicker occurs when automatic camera exposure makes tiny variations between shots. To prevent flicker, shoot in Manual exposure mode, lock Manual White Balance, and use manual focus. When shooting sunset transitions (day-to-night holy grails), use exposure smoothing tools in post-production.