The five behaviours, and the slider for each
Film is not a colour. It is a set of physical behaviours that a strip of emulsion has and a sensor does not, and every one of them has a rough equivalent in an ordinary photo editor. Learn the behaviours and you can build the look in Lightroom, Snapseed, VSCO or Apple Photos without owning a single preset.
| What film does | Why it happens | What digital does instead | The move that fakes it |
|---|---|---|---|
| Highlights roll off gently | The emulsion has a long shoulder, so it keeps recording as it gets brighter | Clips to flat white and stops | Highlights down, whites down a little, and leave the contrast slider alone |
| Blacks never reach true black | Base fog: the film base itself is slightly grey | Sensor blacks go to zero | Blacks up by roughly 8 to 15, or lift the bottom point of the tone curve |
| Grain sits in the midtones | Silver crystal structure, strongest where the exposure lands mid scale | Noise sits in the shadows instead | A low grain amount with medium size and low roughness |
| Shadows lean warm and a touch green | Colour negative dye behaviour | Shadows drift blue | Colour grading shadows toward orange or olive, gently |
| Bright edges glow warm | Halation: light reflects off the film base and comes back | Edges stay clean and hard | A soft warm brush along backlit edges, or an app that models it |
| Corners and edges soften | Real lenses, imperfectly made | Corner-to-corner digital sharpness | Texture and clarity down slightly. Never sharpen a film edit |
A photo that has three of those reads as edited. A photo that has five reads as film. The reason so many attempts stop at two is that the first two, grain and a warm tint, are the ones with obvious sliders.
The order they go in
Order matters here more than in ordinary editing, because each of these moves changes what the next one is reacting to.
Tone before colour. Set exposure so the subject is properly lit, then bring the highlights down and lift the blacks. That pairing is the whole tonal signature of negative film, and doing it first means you are grading a photograph that already behaves like film rather than one that behaves like a sensor.
Colour second, and once only. Push the shadows warm or olive, leave the midtones alone, and let the highlights stay close to neutral or drift barely warm. One decision. The instinct to also raise saturation is the instinct to undo the work, because colour negative is restrained rather than punchy.
Texture last. Grain, then any softening, then halation if your app has it. Add grain before you lift exposure and the grain lifts with it into visible speckle, which is how a film edit turns into a noisy one.
The whole thing is about ninety seconds per photo once you know the moves, and it is worth saving as a preset once it is reliable.
Grain structure, not a grain slider
The most common mistake in a film edit is grain that is too coarse and too even. Real grain is not noise scattered over an image at uniform strength. It is strongest in the middle tones, almost absent in the brightest highlights, and it gets finer as the film gets slower.
In practice that means a low amount with a medium size, not a high amount with a small size. Small, heavy grain reads as digital noise, because digital noise is small and heavy. A slightly larger, softer, sparser grain reads as film even at the same overall strength. Lightroom exposes all three controls, Snapseed's Grainy Film gives you a single strength, and VSCO's grain slider sits alongside its presets.
The other half of it is scale. Grain added to a full resolution image and then posted to a platform that resizes it down to a fraction of the width mostly disappears, because the grain is scaled down along with everything else. Export at roughly the size you intend to post, add grain to that, and what you see is what other people will see. There is a full page on this at how to add grain to photos.
Halation is the one that sells it
Halation is the warm red-orange bleed that appears where a bright area meets a dark one: backlit hair, a window frame in a dim room, a street light at dusk, sun catching the edge of a shoulder. It happens because light passes through the emulsion, reflects off the back of the film base and returns into the layers above. Sensors do not do it, and most filters do not model it.
It is also the reason a film filter can look convincing in flat light and obviously fake the moment somebody stands in front of a window. If you are judging an app, shoot one backlit portrait and zoom into the hair. The look pages cover what a properly modelled version does in our 35mm film look, and the app comparison lives in best film camera apps for iPhone.
Faking it by hand in a general editor is crude but workable. Take a brush or a radial mask, set it very soft and very large, add a small amount of exposure and push its temperature strongly warm, then paint along the bright edge rather than over the bright area. Keep it low enough that you would not notice it if you were not looking for it. Halation is felt, not seen.
Our own app is one of the ones that renders this live rather than afterwards, so a backlit frame looks right in the viewfinder. It is not released yet: it reaches iPhone this fall, free to start, and there is a waitlist.
What to do at capture, which matters more
Film looks are easier to reach on some photographs than on others, and the difference is decided before you open an editor.
- Expose slightly bright. Negative film tolerates over-exposure far better than under, and the look you are copying is the look of a generously exposed frame. A phone photo that is a third of a stop bright will take a film edit; one that is a stop dark will not.
- Put something bright behind your subject. Backlight is where halation lives, and without it you are only doing a colour grade.
- Shoot in soft light. Overcast sky, open shade and the hour before sunset all have the gentle contrast that film's shoulder was made for. Overhead midday sun is the one to avoid.
- Turn the flash off. Direct flash suits disposable and digicam looks, which are a different family entirely. It removes the highlight roll-off that a 35mm edit depends on.
None of this requires a camera app. The stock camera plus the five edits above will get closer than an expensive filter applied to a badly lit frame.
Black and white film is a different problem
Everything above concerns colour negative. Black and white film has its own behaviours and copying the colour recipe will not get you there.
The defining trait is separation rather than contrast. On black and white film a red jumper and a green hedge of the same brightness come out as different greys, because the emulsion responds unevenly across the spectrum. Simply desaturating a digital photo collapses them into the same grey, which is why so many phone conversions look flat and lifeless.
The fix is in the black and white mix panel, which most editors have. Pull the orange and red channels up to brighten skin, pull blue down to darken a sky, and you have reproduced the effect of the yellow filter every film photographer screwed onto the lens. Then set contrast with the curve rather than the contrast slider, keep the blacks properly black in this one case, and let the grain be coarser than you would in colour, because black and white films that people actually shot were grainier.
Questions people ask
How to make photos look like film on an iPhone?
Bring the highlights down, lift the blacks so nothing is pure black, push the shadows warm rather than blue, add a low amount of medium-sized grain last, and soften rather than sharpen. A film camera app does it at capture instead, which is faster but harder to undo.
What is the difference between a film filter and this?
A filter is a saved version of these moves applied in one tap. Doing it by hand means it adapts to the photo in front of you, which matters because a preset built for golden hour will not behave indoors under warm bulbs.
Why does my film edit look fake in backlit photos?
Almost always missing halation, the warm glow where a bright edge meets a dark one. Emulations that skip it look fine in flat light and immediately wrong as soon as somebody stands in front of a window.
Should I add grain before or after everything else?
After. Grain added early gets amplified by any exposure or contrast change that follows, which turns it into visible speckle. It is the last move in the edit, and at a lower amount than looks right on a phone screen.
Do I need to shoot raw to make photos look like film?
No. Raw gives you more room to lift shadows and recover highlights, which helps, but the five behaviours are all reachable from an ordinary phone JPEG as long as the photo was not badly underexposed to start with.