How to make a slow zoom on a photo

A still photo can feel more engaging when the view slowly moves across it. This effect is often called a Ken Burns effect: the image gradually zooms in, zooms out, or pans while the video plays.

You can make one in any video editor that supports keyframes, points that set how a visual property changes over time. TooLab's Photo Editor can help you crop or adjust the source image, but it does not animate a photo or export a video. Use a video editor for the movement itself.

Make the slow zoom

1. Prepare the photo if needed. Open it in the Photo Editor to check the crop and make any brightness or color adjustments. Save or export the finished still, then open it in a video editor that supports keyframes.
2. Set your video project's frame shape, such as landscape 16:9 or vertical 9:16, before positioning the photo. Add the still to the timeline and make its clip about 8 to 12 seconds long for a gentle, noticeable move.
3. At the start of the clip, set the photo's scale to fit the frame, usually 100%, and set its position. Add a keyframe for scale and position at this point. Editors use different names for these controls, such as zoom, transform, or size.
4. Move the playhead to the end of the clip. Increase the scale to about 110% to 115% and adjust the position to frame the detail you want viewers to notice. Add another keyframe. The editor should now move between the starting and ending values over the clip.
5. Play the clip from beginning to end. If the motion looks smooth and the frame stays filled, export it at the resolution and frame rate of your project. Watch the exported video once to check for unexpected black edges or blur.

If your editor does not add a keyframe when you change a value, look for a keyframe control beside scale or position. The exact icon and label vary by editor. Make sure you set both the starting and ending values, or the image may simply appear at one fixed size.

Choose the direction and amount

Zoom in on a detail

Start with the whole composition, then finish slightly closer to a face, object, or area of interest. A change from 100% to 110% is subtle. A change to 115% is more obvious, while a much larger jump can feel abrupt and may reveal a soft or pixelated image. Keep the ending position centered on the detail you want people to see.

Zoom out to reveal the scene

Reverse the scale values to begin close and gradually show more of the photo. Check that the starting crop still makes sense on its own. If the opening frame cuts off an important subject, move the photo before setting the first keyframe.

Pan across the photo

To move across a wide landscape or group picture, change the position between the first and last keyframes. You can combine a small position change with a slight zoom, but avoid moving in several directions at once. A slow left-to-right pan is easier to follow than a large diagonal sweep.

Match the photo to the video frame

A photo and a video frame may have different shapes. A landscape image placed in a vertical project can lose much of its sides when it fills the frame. Reposition it to keep the subject visible, or use a smaller scale if your editor allows the background to remain visible. Choose a source image with enough pixels for the final video size, especially if you plan to zoom in.

Fix a zoom that looks wrong

1. Reduce the scale change. If the move looks like a jump or makes the image look soft, try changing the scale by only 5% to 10%. A slow move does not need a large zoom to be noticeable.
2. Check the keyframe timing. Put the first keyframe at the start of the photo clip and the last one at its end. If both keyframes are close together, the zoom happens quickly and then stops.
3. Keep the frame covered. Moving or zooming out too far can expose empty edges around the photo. Increase the scale slightly or adjust the position so the image covers every corner throughout the move.
4. Change the motion curve. Many editors offer a choice between linear movement and easing. Linear movement keeps the zoom at a steady pace. Ease in and ease out make it start and stop more gradually, which often suits a quiet, cinematic photo sequence.
5. Use a larger source image. If the photo becomes visibly blurry near the end, the original may not have enough detail for that crop. Start with a higher-resolution image or reduce the final zoom. Sharpening cannot restore detail that the image does not contain.

Why the zoom can feel uneven

Scale is usually measured as a percentage of the image's original size, but the perceived speed depends on more than the number. A 10% increase across a large photo may look very gentle, while the same increase on a close crop can feel much faster. The clip length matters too: a 10% change over 10 seconds moves more slowly than the same change over 3 seconds.

Position and scale can also interact. If you zoom toward a subject while moving the image, the subject may drift unless you adjust the ending position carefully. Preview the complete clip, not just the first and last frames, and make small changes until the movement feels calm and deliberate.

For a simple result, use one photo, two keyframes, and a modest scale change. Add more keyframes only when you need the camera movement to change direction or speed partway through.