How to Digitize Film Negatives With Your Phone

What you need

• A phone with a reasonably recent camera.
• An even white light to put behind the film: a light pad made for tracing or film, or a tablet or laptop screen showing a blank white page at full brightness.
• Something to keep the film flat, such as a film holder, or two pieces of dark card with a frame-sized window cut in them.
• A way to hold the phone steady: a small tripod, a phone clamp, or two stacks of books bridged so the camera lens looks straight down through the gap.
• A blower or a soft, clean cloth for dust.

Set up the light

The light behind the film has to be even and white. A dedicated light pad is the easiest option. A screen works too, with one catch: if the film lies directly on the screen, the camera can pick up the grid of pixels as a pattern across the picture. Raise the film a couple of centimeters above the screen, or put a piece of plain white translucent plastic or tracing paper between the screen and the film, so the pixels blur into a smooth glow.

Then cover everything around the frame. Light that reaches the lens without passing through the film lowers contrast and confuses the color. A dark card mask with a window the size of one frame takes care of it.

Finally, turn off the room lights. Light falling on the top surface of the film causes reflections and washes out the image.

Take the photo

1. 1

   Clean the film

   Blow off loose dust and handle the film by its edges. Every speck shows up as a white mark on the positive.

2. 2

   Lay the film flat

   Put it in the holder or under the card mask. Curled film goes out of focus toward the edges.

3. 3

   Line up the phone

   Hold the phone parallel to the film so the frame is a true rectangle, not a trapezoid. Use the main camera, not the ultra-wide one. If moving close makes your phone switch to a macro mode (the flower icon on an iPhone), turn it off: on many phones macro uses the ultra-wide lens, which is less sharp.

4. 4

   Fill the frame

   Move in until one negative nearly fills the screen, leaving a thin edge of blank film visible. If the phone will not focus that close, back off a little and crop later.

5. 5

   Lock focus and exposure

   Tap and hold on the negative to lock focus. Lower the exposure if the clear parts of the film look blown out to pure white; the blank film edge should be bright but still show its color.

6. 6

   Shoot without shaking

   Use the self-timer or a volume button so you are not touching the screen at the moment of exposure. Take two or three shots and keep the sharpest.

Camera settings that help

• Turn off the flash, and turn off any filters or portrait effects.
• Use the standard photo mode. Night mode and heavy HDR processing can change the tones of the negative.
• Save captures as JPEG if you plan to move files to a computer. On an iPhone, picking a photo straight from your library in Safari usually converts HEIC to JPEG automatically; if you copy .heic files to a desktop browser, either set Settings > Camera > Formats to “Most Compatible” ahead of time or export them as JPEG first.
• Avoid digital zoom. Moving the phone closer keeps more real detail.
• If your camera app lets you set white balance, set it once and leave it, so every frame on the roll is captured the same way.

Turn the photo into a positive

What you have now is a photo of a negative: dark where the scene was bright, and orange all over if it is color film. Converting it means reversing the tones and removing that orange tint. You can do this by hand in an image editor (see inverting negatives in Photoshop), or with a converter made for film. If you are curious why color film is orange in the first place, read about the orange mask.

What to expect from a phone

A careful phone capture is fine for viewing on a screen, sharing, and small prints, and it is a quick way to find out which frames on an old roll are worth more effort. It will not match a dedicated film scanner or a camera with a macro lens for fine detail, and deep shadows may be noisier.

The most common problems are easy to fix: uneven brightness means the light source is not even or is too close; a soft image means the film was not flat or the phone moved; a color cast that will not go away usually means room light was reaching the film.