iPhone RAW vs HEIF: which to shoot for a film look

26 September 2026

Shoot HEIF if you want a finished photo straight out of the camera, especially with Apple's Photographic Styles, which only work on HEIF. Shoot RAW if the film look matters to you. With HEIF, the look is applied to a small, fully processed file. With RAW, the look is a develop step you can change whenever you like, at the cost of files roughly ten times larger. On a Pro iPhone there's a second choice: ProRAW, which is cleaner because Apple merges several frames, or plain Bayer RAW, a single frame with more natural texture.

The short comparison

Sources: Apple's About Apple ProRAW support page for sizes and models ("ProRAW files are 10 to 12 times larger than HEIF or JPEG files"). Apple's WWDC 2021 ProRAW session covers the format: 12-bit, losslessly compressed, demosaiced, with Smart HDR, Deep Fusion and noise reduction applied.

What HEIF gives you

A HEIF from Apple's Camera is a finished photo. The phone has already merged frames, removed noise, sharpened, tone-mapped and chosen the white balance. It's compact and looks good on a phone screen. For most photos of most things, that's the right choice.

It's also the only format Photographic Styles work with. PetaPixel's iPhone 18 Pro review states that Styles "are only available if you are capturing HEIF files: they aren't an option if you switch to JPEGs or if you shoot RAW". On iPhone 16 and later you can change a HEIF's Style afterwards in Photos, so it isn't completely fixed. But you can only choose among Apple's Styles, applied to an image that's already been processed. You can't pull a highlight back that the tone mapping gave up on, and you can't remove the noise reduction.

What RAW gives you

• Latitude. ProRAW stores 12 bits per channel, and Apple's session says its encoding holds up to 14 stops of dynamic range. Highlights that look white and shadows that look black usually still contain detail.
• White balance that's truly adjustable. You set it from the sensor data, not by tinting a finished image.
• Control over processing. Sharpening, noise reduction and tone mapping become your choices. That matters for a film look, because the painting look comes from exactly those three.

The costs: files 10 to 12 times larger, no Live Photos or Portrait mode with ProRAW (per Apple), and 48MP only on the main camera at 1×. And a RAW has to be developed before it looks like anything.

For a film look: baked in vs developed

This is where the difference matters most.

With HEIF, the film look is layered on top of Apple's finished image. The fine texture is already gone, so grain lands on smoothed surfaces. The highlight shoulder was set by the phone. The look belongs to that file. Even Apple's newest film tools, the iPhone 18 Pro's Film texture and Grain, exist only on HEIF, and only on photos taken on an 18 Pro. See iPhone 18 Pro's Film texture.

With RAW, the film is how the negative is developed. Develop it with a warm negative look today, and with a black-and-white film you make next year. Nothing is lost between versions, because each one starts from the RAW. That's the idea behind treating every photo as a negative.

ProRAW or plain RAW?

Both are DNG files, but they aren't the same.

ProRAW is Apple's pipeline stopped just before the look is applied. Frames are merged, noise is reduced, and demosaicing is done. Tone mapping and sharpening are stored as editable defaults. It's clean, even in low light, and it works across the phone's cameras. For night scenes that must look clean, or high-contrast scenes where Smart HDR helps, ProRAW is the better file.

Plain Bayer RAW is one exposure, straight from the sensor. Nothing is merged, so nothing is smeared. There's more noise, and at low ISO in good light that noise is fine and even, a lot like film grain. In dim light it gets heavy, and you'll need some noise reduction. For foliage, hair and textured surfaces in decent light, it usually looks more like a photograph and less like a painting.

We'd hedge one thing. How much difference you see depends on the scene, the light and how you develop each file. Try both on the same subject before you decide.

Doing it in Chobial

Chobial always shoots RAW, with the film live in the viewfinder, so you don't have to choose between seeing the look and keeping the negative.

1. On a Pro iPhone (12 Pro or later), choose ProRAW or plain RAW from the format pill, or set a default in Settings › Use ProRAW. Other iPhones capture RAW. See your first roll.
2. Load a film and shoot. The viewfinder shows the develop you'll get.
3. If you want a ready-to-share file straight away, turn on After Capture › Save to Photos, which saves a copy developed with the loaded film. Add Attach RAW File to keep the negative alongside it.
4. To change the look later, open Library › photo › editor › Film and tap another film. The photo develops again from the RAW, including with films you make later.
5. On plain RAW, set the film's Develop › Noise Reduction and Sharpness by hand instead of Auto to keep the texture, and let a grain stock do the rest.

Storage is the trade-off. RAW negatives live in Files › On My iPhone › Chobial › Captures, and they're large. Photos aren't synced between devices (films and settings are, via iCloud), so back up that folder the way you'd back up any RAW files. Exports (JPEG, HEIC or the original DNG) are the paid part. Shooting, developing and making films are free.

Which should you shoot?

• Snapshots you'll share as they are: HEIF, with a Photographic Style if you like one.
• Anything you care about the look of: RAW, with the film applied as a develop.
• Low light that must look clean: ProRAW.
• Texture, foliage, people in good light, a grain-first look: plain RAW.

Questions