How to do double exposure photography

What is a double exposure?

It is one picture made from two exposures, so the scene shows both at once. The technique is old, and Wikipedia describes it under multiple exposure. Photographers used it for effect long before software could do it in a few taps.

The best results look like a deliberate collage: a silhouette filled with a landscape, a face and a tree, a street and a window.

How does it work on film?

Some cameras have a multiple exposure lever that lets you fire twice without advancing the film. Others let you do it by rewinding slightly. The film receives the light from both shots, so each one adds to the other, and bright parts of the second shot can overpower the first.

This is why photographers give each exposure less light than normal. Each shot is exposed for a smaller share of the total, so the sum looks right.

How do I decide what to pair?

• A dark silhouette against a bright sky, then a pattern that fills the dark shape.
• A portrait and a textured subject such as leaves, brick or water.
• A building and a face, with simple shapes in each.
• Two subjects with space where the other has detail.
• Avoid two busy scenes. They turn to mush.

How do I expose each shot?

1. Shoot the first picture so the subject you want to keep is clear and dark against a plain, bright background.
2. Underexpose each of the two shots by about one stop if your camera lets you.
3. Place the second picture's detail where the first picture is dark.
4. Keep the second subject lit from the side, so it has texture.
5. Take a spare frame with a slightly different exposure, because you cannot check.

How does it work in Proofsheet?

Double exposure is a Pro feature. When it is switched on for a roll, the camera prompts you to shoot again on the same frame, and the two pictures blend. Because Proofsheet hides every frame until the roll develops, you cannot review the result. It is a surprise, as it was on film. See the film camera page.

The blend is digital and happens when the roll develops. It does not use film, and the look you chose when you loaded the roll is applied as usual. Proofsheet is not on the App Store yet.

How does a roll limit change it?

Each double exposure uses one frame, which is the point. On a 12-frame roll you can afford two or three experiments and keep the rest for regular shots. Plan them. Walk with a first subject in mind and a second to follow. The limit forces you to decide before pressing.

What are common mistakes?

• Pairing two bright scenes, which wash out.
• Choosing two complicated subjects, which blur together.
• Forgetting to underexpose, which leaves the result pale.
• Using the same angle twice, which makes the second shot add nothing.
• Doing it on every frame, which removes the surprise.

Can I do it on the built-in Camera?

Not directly. You would need to blend two photos afterward in an editing app. That is a fine approach, and it gives you control, but you can see the result at once, and that changes the way you shoot. A roll-based app keeps the blind, in-the-moment quality of the original technique.

For more on what a limit does to your pictures, read how to take photos that look like film.

How should I show the result?

A double exposure often looks best as a single print. In Proofsheet, tap a frame on the proof sheet to open its print, and share it on its own as 9:16 or 1:1. See the proof sheet page for the export options.

Ideas to try on one roll

• A friend's profile and a sky full of clouds.
• A shop window reflection and a street sign.
• A tree in winter and a close-up of someone's hands.
• A bridge and a face turned toward the light.
• A bright window and a plant on a shelf.

How do I plan a pair in advance?

Write the pairs in your notes before you leave: first subject, second subject, where each will sit in the frame. On the street, you will not have time to think. If the first shot is a silhouette at the left, aim the second shot so its detail lands on the right and the center of the silhouette.

Plan only two or three pairs per roll. The rest of the roll shows ordinary frames, and the contrast makes the doubles feel special.

What happens on the proof sheet?

A double exposure takes one frame on the sheet, like any other. You can circle it, cross it out or open its print to see it larger. The sheet is small, so subtle blends can be hard to read at that size. Open the print to judge it, then decide whether it is a keeper.

How do I avoid a muddy result?

• Keep one of the two subjects very simple.
• Use plain backgrounds in at least one shot.
• Put dark areas of one picture over light areas of the other.
• Shoot the high-detail subject last, so it lands on the dark area.
• Keep a spare frame for a second try.