iPhone RAW vs ProRAW vs HEIF: Which Format Is Best?
Compare iPhone RAW, ProRAW, and HEIF for quality, file size, editing
The practical answer is simple: use HEIF for most everyday photos, ProRAW when you plan substantial editing, and iPhone RAW when your software workflow specifically benefits from its computational processing. None is universally best.
The right choice depends on how you edit, how much storage you have, and whether you value quick sharing or maximum latitude after capture. Here is what each iPhone format changes and how to select one without sacrificing important image data.
iPhone RAW, ProRAW, and HEIF at a glance
Apple’s available options depend on the iPhone model and software version. On compatible models, you may see combinations of High Efficiency or HEIF, Most Compatible, RAW, and ProRAW.
| Format | What it is | Main advantages | Main trade-offs | Best for |
|---|---|---|---|---|
| HEIF | A processed, compressed still image, commonly saved as .heic | Small files, fast capture, good default quality, easy sharing | Less editing flexibility than a RAW file; HDR compatibility can vary | Everyday photography, events, and storage-conscious shooting |
| RAW | An iPhone computational RAW image saved as a .dng file | Greater control over color, tone, shadows, and highlights | Larger files, slower workflow, and a more demanding editing process | Editors comfortable with Apple’s computational DNG workflow |
| ProRAW | Apple’s computational RAW mode, also based on DNG | More retained image data and very high editing latitude | Large files, slower capture, and limited device and software support | Deliberate editing, printing, cropping, and difficult lighting |
Two details are easy to miss. First, both iPhone RAW and ProRAW normally use the .dng extension, so the extension alone may not tell you which RAW mode created a file. Second, neither mode is simply an untouched dump of sensor data. Apple processes both computationally.
What actually changes between RAW, ProRAW, and HEIF?
Processing
HEIF is a finished rendering: the iPhone processes color, tone, noise, and highlights before saving the image. It is designed to look good with minimal editing.
iPhone RAW uses more computational processing to produce a flexible DNG file. ProRAW follows a less processed path than standard iPhone RAW, retaining more information so an editor can make more substantial changes later. It is still a computational format rather than a conventional sensor-level RAW file.
Editing latitude
HEIF is usually sufficient for cropping, modest exposure adjustments, and routine color corrections. Its compressed rendering leaves less room to recover weak areas.
ProRAW offers the most room among these choices for recovering shadows, shaping highlights, refining color, and making large tonal changes. Standard RAW can also provide considerable flexibility, but Apple’s heavier computational processing may leave less raw latitude than ProRAW.
This flexibility matters most in backlit scenes, high-contrast landscapes, mixed indoor lighting, and portraits with difficult skin tones. It is less noticeable when you only resize, crop slightly, or publish an image to social media.
Storage and workflow
HEIF puts the least pressure on storage and usually fits faster capture workflows. RAW and ProRAW create larger files that take longer to save, transfer, open, and process. They are therefore less convenient for long events, rapid bursts, or devices with limited free space.
RAW-family files also require an editor that understands iPhone-generated DNG metadata. Before an important shoot, confirm that your preferred mobile or desktop application opens the files and renders them as expected.
Which iPhone format should you choose?
Use the decision that matches the photograph’s purpose rather than assuming the largest or most advanced file is always best.
- For everyday photos: Choose HEIF. It gives iPhones a useful balance of image quality, file size, and convenience.
- For difficult light or planned edits: Choose ProRAW. It is the safer starting point when shadows, highlights, color, or crop adjustments may be extensive.
- For an established DNG workflow: Try standard RAW. Some editors may already handle its computational processing well.
- For portraits, landscapes, and print-oriented work: ProRAW is usually the most flexible of the three, provided your device and software support it.
- For events, travel, and extended shooting: HEIF reduces storage pressure and keeps the capture-to-share process simple.
- For maximum image data on supported hardware: Consider the higher-capacity ProRAW option if your iPhone offers one and your editing software