What is the Ken Burns effect?
Last updated 2026-10-20
The Ken Burns effect is a slow pan and zoom across a still photo, so the picture feels like footage. It is named after documentary filmmaker Ken Burns, who used it heavily, though he did not invent it. You set a start framing and an end framing, and the software moves between them over the length of the shot.
Where the name comes from
The effect is named for Ken Burns because of his extensive use of it in his documentaries. Burns did not invent it. The National Film Board of Canada's City of Gold (1957) is a documentary built from archive photographs, and its panning made the stills seem to move.
Apple later put the name on a feature. iMovie on Mac has a Ken Burns button that shows a Start frame and an End frame over a clip or photo. The clip begins at the Start framing and moves toward the End framing.
When to use it
Use it when a still photo is all you have and the shot needs life. Typical cases are archive photos, portraits, product stills and screenshots.
Decision rule: the move needs a destination. Zoom in toward the thing the narration is about. Zoom out to reveal context when the viewer needs to see where something is. Burns himself warns against "movement for the sake of movement".
Skip it on footage that already moves, and on a photo that has nothing to travel to.
How fast it should move, and common mistakes
Slower than you think. The move should be hard to notice the first time you watch it, and it should last as long as the photo is on screen so it never stops and starts. Pick one direction per shot.
| Mistake | What goes wrong | Fix |
|---|---|---|
| Moving too fast | The motion draws more attention than the photo | Spread one gentle move across the full time on screen |
| Starting from a small photo | The zoom shows pixels and blur | Use a photo larger than the video frame, or zoom less |
| The same move on every photo | The sequence feels like a template | Alternate zoom in, zoom out and pan, and aim each at its subject |
| Moving toward empty space | The viewer wonders what they are meant to see | End the move on a face, object or detail |
| Cropping a face at the edge | A vertical frame cuts the person off | Check the final frame, not only the first |
Ken Burns on video clips
The same idea works on a video clip, not only a photo. Apple's iMovie documentation says the effect makes the camera appear to zoom in or out on a clip or a photo. What differs is how fast you want the move.
| Goal | Method |
|---|---|
| A tighter framing for the whole clip | Scale the clip above 100 percent and reposition it |
| A slow move toward the subject | Set a start framing and an end framing, or add two keyframes |
| A quick emphasis on one word | Use a short punch-in that lands on the word |
The Ken Burns effect in Woven
Woven gives you three ways to move across a still. Woven describes its Drift effect as a slow horizontal pan, the Ken Burns look on a still. Camera effects never move captions or text, so your words stay put while the picture moves. Crop, aspect and fit cannot be animated, which is why the Crop tab's zoom is a fixed framing, not a move.
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- Add a slow Ken Burns zoom to each photo.
- Pan across this photo from left to right over five seconds.
- Zoom in slowly on my face during this clip.
- Use a different gentle move on each photo in the sequence.
Or do it by hand
- 1Add the photo. Use "Add" › "Image" or drag the file onto the timeline.
- 2Simplest: a loop preset. Select the image, open the "Animation" tab and under "Presets" pick "Loop" › "Slow Zoom". It zooms in once across the whole clip, so a longer clip gives a slower move.
- 3For a pan: add Drift. Choose "Add" › "Video Effects" › "Drift", a slow horizontal pan. It is a timed effect that moves the whole frame, 3 seconds by default, so line it up with the photo.
- 4For full control: keyframes. Place the playhead at the start and press ⌥K or "◆ Add". Set the size and position. Move to the end, press ⌥K again and change the values. To change how it moves, right-click the end key and choose "Easing".
- 5On a video clip. Add "Push-in" from "Add" › "Video Effects". It zooms the whole frame for its time range. Select it to open its "Framing" page, where "Zoom" sets how far it goes and you drag the focal point on the canvas.
Common questions
It is a panning and zooming technique used on still images in film and video. The camera appears to move slowly toward or across the photo.
Ken Burns did not invent it. It is named after him for his heavy use of it, and earlier films such as City of Gold (1957) already panned across still photographs.
Set a start framing and an end framing on a photo, and let the editor move between them over the shot. Most editors call these start and end frames or keyframes.
Yes. Apple describes it as making the camera appear to zoom in or out on a clip or a photo. It suits a slow move on a static shot.
Sources
- Wikipedia: Ken Burns effect, checked October 19, 2026
- Apple Support: Add the Ken Burns effect in iMovie on Mac, checked October 19, 2026
- The Canadian Encyclopedia: City of Gold, checked October 19, 2026
- Poynter: Meaning in Motion, Ken Burns and His Effect, checked October 19, 2026
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