Time lapse turns slow changes into fast motion by taking photos at set intervals
Time lapse photography works by capturing a series of still images at regular intervals—every few seconds, every minute, or every hour—then playing them back in sequence at normal speed. The result makes a sunset happen in five seconds, a flower bloom in thirty, or clouds race across the sky. The camera does the waiting; you set it up and let it run.
The core principle is straightforward: the longer the real-world event takes, the longer the interval between shots. A cloud moving across the sky might need a photo every 3 seconds. A plant growing needs one every 10 minutes. A shadow moving across a room needs one every 30 seconds. Get the interval wrong and your final video either shows nothing happening or jumps so fast it looks broken.
Key Takeaways
- Time lapse requires an interval timer built into your camera, a remote intervalometer, or smartphone app—you cannot do it by hand.
- Calculate your interval by dividing the total real time by the number of frames you want in your final video (usually 24 to 30 frames per second).
- Lock your exposure settings manually so brightness does not shift between frames, which creates a flickering effect called flicker.
- Shoot in RAW format if your camera supports it, because it gives you more control when editing the sequence into a video.
- A sturdy tripod is essential—even a tiny camera movement becomes obvious when 500 images play back as video.
Understanding interval and frame rate
The interval is how many seconds pass between each photo. The frame rate is how many photos play back per second in your final video. These two numbers determine how fast your time lapse moves.
Most videos play at 24 or 30 frames per second. If you want a 10-second video at 24 fps, you need 240 photos. If your real-world event lasts 2 hours (7,200 seconds), divide 7,200 by 240 to get your interval: 30 seconds between shots. A sunset that takes 1 hour needs an interval of about 15 seconds for a 24-frame video. A flower blooming over 8 hours needs an interval of 2 minutes.
Start with this formula: Interval (in seconds) = Total real time (in seconds) ÷ Desired frame count. For most subjects, 200 to 500 frames makes a smooth, watchable video. Fewer frames (100 to 150) creates choppier motion; more frames (600+) creates slower, more fluid motion.
Setting up your camera's interval timer
Most modern cameras—DSLRs, mirrorless, and many smartphones—have a built-in interval timer. Check your camera's menu under "Interval Shooting," "Time Lapse," "Intervalometer," or "Self-Timer Options." The exact name varies by brand and model.
On a Canon DSLR, go to the Menu, find Interval Timer Shooting, and enter your interval in seconds and the number of shots you want. On a Nikon, look for Interval Timer under the Shooting Menu. On Sony mirrorless cameras, find Interval Rec in the Camera Settings menu. On an iPhone, use the built-in Timelapse mode in the Camera app—it automatically calculates the interval based on how long you hold the button.
If your camera has no interval timer, buy an external intervalometer—a small wireless remote that triggers your camera at set intervals. They cost between $20 and $100 and work with most DSLRs and mirrorless cameras via the shutter release port or wireless connection. Smartphone users can read apps like Hyperlapse, Framelapse, or Moment, which handle the interval timing automatically.
Locking exposure to prevent flicker
The most common mistake in time lapse is letting your camera adjust exposure between shots. As clouds move or the sun shifts, the camera's light meter reacts and changes the shutter speed, aperture, or ISO. When you play back 300 images with slightly different brightness, the video flickers like a strobe light.
Switch your camera to Manual mode (M) and set shutter speed, aperture, and ISO by hand. For a sunset, you might use f/5.6, 1/125 second, and ISO 400. For a cloudy day, f/8, 1/60 second, and ISO 200. The exact settings depend on your light, but once you set them, they stay locked for every frame. If your camera has an Auto ISO option, turn it off.
Also turn off autofocus. Set your lens to manual focus and focus once before you start shooting. If the camera refocuses between frames, sharpness will shift and create another kind of flicker. On mirrorless cameras, disable continuous autofocus and use manual focus or single-shot autofocus before the interval timer starts.
Choosing the right interval for your subject
Different subjects need different intervals. Use this as a starting point, then adjust based on how fast the real-world change happens.
| Subject | Real-world duration | Suggested interval | Approximate frame count |
|---|---|---|---|
| Clouds or sky | 30 minutes to 2 hours | 3 to 10 seconds | 300 to 400 frames |
| Sunset or sunrise | 45 minutes to 1 hour | 10 to 15 seconds | 240 to 360 frames |
| Traffic or crowds | 10 to 30 minutes | 1 to 3 seconds | 300 to 500 frames |
| Plant growth or flowers opening | 4 to 12 hours | 1 to 5 minutes | 240 to 400 frames |
| Stars or moon movement | 1 to 4 hours | 10 to 30 seconds | 300 to 400 frames |
| Construction or timelapse art | Several hours to days | 5 to 30 minutes | 200 to 400 frames |
If you are unsure, start with a shorter interval and more frames. You can always delete frames later, but you cannot add frames that were never captured. A 5-second interval on a 1-hour event gives you 720 frames—more than enough to create a smooth 24-frame-per-second video of 30 seconds.
Stabilizing your camera and managing power
A tripod is not optional. Even a tiny vibration—wind, someone walking past, the camera settling—becomes a visible jump in your final video. Use a sturdy tripod with a ball head or pan-tilt head, and tighten every joint. If you are shooting outdoors, add weight to the tripod base or stake it down so wind cannot move it.
Battery life is your second concern. A time lapse that runs for 2 hours will drain your battery faster than normal shooting because the camera is active the entire time. Bring a fully charged spare battery, or use an external power supply. Many cameras accept USB-C or USB power while shooting; check your manual. For very long shoots (6+ hours), an external battery pack or AC adapter is essential.
Also check your memory card space. A 2-hour time lapse at high resolution can use 8 to 16 GB of storage, depending on your camera and format. Bring a second card or clear space before you start.
Converting your image sequence into a video
After your interval timer finishes, you have a folder of 200 to 500 individual JPEG or RAW files. You need to combine them into a video file. Most cameras cannot do this; you need software on your computer.
Free options: Adobe Lightroom (free version) can import an image sequence and export it as video. Open File > Import Photos, select all your time lapse images in order, then go to File > Export and choose a video format. DaVinci Resolve (free version) also imports image sequences and exports video. Open File > Import, select your first image, and it will automatically load the entire sequence.
Paid options: Adobe Premiere Pro, Final Cut Pro, and Adobe After Effects all handle image sequences natively. Import your folder, drag it to the timeline, and export as MP4 or MOV.
On a smartphone, apps like Hyperlapse and Framelapse create the video automatically as you shoot—no separate conversion step needed.
Frequently Asked Questions
Can I shoot time lapse on my smartphone?
Yes. iPhones have a built-in Timelapse mode in the Camera app that automatically calculates intervals. Android phones vary by model; check your camera app for a Timelapse or Time Lapse option. For more control, read Hyperlapse, Framelapse, or Moment, which let you set custom intervals and frame rates.
What happens if my interval is too long or too short?
Too long: your video jumps erratically and looks broken. Too short: your video plays very slowly or barely moves. If you realize mid-shoot that your interval is wrong, stop and restart with a new setting. You cannot fix the interval after shooting.
Do I need to shoot in RAW or JPEG?
JPEG is faster and uses less storage. RAW gives you more control when editing—you can adjust exposure, white balance, and color across all frames at once. For beginners, JPEG is fine. For sunsets or tricky lighting, RAW is worth the extra storage.
How do I prevent my time lapse from flickering?
Use Manual exposure mode (M) and lock your shutter speed, aperture, and ISO before you start. Turn off autofocus and auto-ISO. Flicker happens when the camera adjusts these settings between frames.
Can I use a motorized slider or pan-tilt head with time lapse?
Yes. A motorized slider moves your camera smoothly across a scene while the interval timer captures frames. A motorized pan-tilt head rotates the camera. Both create dynamic, professional-looking time lapses. They are optional—a static tripod works fine—but they add motion that makes the video more engaging.