Technique · Place

Parallax depth

Near and far parts of a picture move at different speeds, so a flat photo seems to have depth and the viewer seems to move through it.

Parallax is the depth cue we see from any moving viewpoint: from a train window, the fence rushes past while the hills barely move. When the layers of a picture move at different rates, the brain reads the flat image as a real place with space in it, and the viewer feels they are standing there.

On a still picture the scene is split into layers, usually the people or objects in front, the middle ground and the background, and each layer moves a little at its own speed. Near layers move most, far layers least. Where a layer lifts away, the gap behind it has to be filled in, so small moves keep that fill small.

The common mistakes are gaps and cut-outs. If the move is too big, the edges of the separated layers show, or the people look like cardboard cut-outs sliding over a backdrop. Keep the speed differences gentle, move every layer in the same direction, and leave faces and details exactly as photographed.

When to use it

On an old photograph of a place or a group, a picture that opens a new section, or any still that should feel like a scene rather than a print.

Motion instruction (example)

Last reviewed 15 October 2026.