Recovery tools quote impressive success rates, and most of those numbers come from JPEGs. RAW files are a different problem. If you shoot CR2, CR3, NEF, ARW or RAF and you have just lost a card, the honest expectation is lower than the marketing suggests — and the reasons why are worth understanding, because they change what you should do next.
Why RAW is harder
Size and fragmentation. A JPEG off a phone is a few megabytes. A 45 MP RAW file is 50 to 90 MB. When a card has been filled, partially cleared and refilled, large files get written in pieces scattered across the card. Recovery engines reconstruct deleted files by finding a recognisable header and reading forward. That works beautifully for a small contiguous file and badly for a large fragmented one, where reading forward eventually runs into somebody else’s data. The result is a file that exists, has the right size, and opens to a corrupted mess halfway down.
Format proliferation. RAW is not one format. It is dozens of proprietary, undocumented, per-manufacturer and often per-camera-body containers. Canon changed substantially between CR2 and CR3. Sony’s ARW varies across generations. A recovery engine has to carry signatures for all of them, and coverage of newer bodies frequently lags by a year or more.
Embedded previews confuse the picture. Every RAW file contains an embedded JPEG preview. Recovery tools often find and display that preview, which makes the results screen look wonderful, while the actual RAW payload behind it is damaged. This is the single most common way photographers get a nasty surprise between the scan and the export.
The preview trap, and how to avoid it
This deserves its own section because it costs people money. A tool shows you 400 beautiful thumbnails. You pay. You export. Two hundred of those files will not open in Lightroom.
A thumbnail is not enough. Check the recovered file size, copy a small sample to another drive and open it in Lightroom, Capture One or the camera maker’s software. That practical test tells you whether the RAW payload survived, not merely the embedded preview.
Practical defence: check file sizes in the results list. A CR3 that should be 60 MB and is listed at 2 MB is a preview wearing a RAW file’s name. And where the tool allows it, recover a small sample first and open them in your actual editor before paying for the full set.
What to do, in order
- Stop using the card. No more shots, not even a test frame. Take it out of the camera.
- Image the card before scanning. On a card that is failing, every additional read is a risk. Use an appropriate disk-imaging utility to create a sector-level copy, then scan the image while leaving the original card untouched.
- Run a scan and inspect sizes, not thumbnails.
- Recover a sample and open it properly in Lightroom, Capture One or your camera maker’s software before committing.
- If results are poor, try a second engine. RAW signature coverage genuinely differs between tools, and a body that one engine does not recognise may be well handled by another.
Which tools handle RAW best
EaseUS Data Recovery Wizard can scan for common RAW formats, but coverage varies by camera model, format revision and file fragmentation. Confirm that the current version supports your CR3, NEF, ARW or RAF files and inspect recovered samples in your normal editor before purchasing.
PhotoRec is free, open source, and genuinely good at finding RAW files that commercial tools miss, because its signature database is maintained by people who care about obscure formats. It discards all filenames and folder structure by design, so expect sorting work. For a photographer with time and no budget, it is a serious option rather than a consolation prize.
Wondershare Recoverit is another tracked option with photo and media recovery features. Check current camera-format support and use the available scan or preview on your own card before paying; specifications cannot predict whether fragmented files will open correctly.
The practical question is not how many gigabytes a plan advertises, because RAW files are large and vendor limits can change. Use the scan to identify the frames that matter, verify a sample where possible and review the current licence terms before purchasing.
When the RAW is damaged rather than missing
A file that returns at the expected size but still will not open may need repair rather than recovery. Keep an untouched copy, then test repair software only on duplicates. Some media tools, including Wondershare Recoverit, advertise repair features; evaluate them with your own files and preview results before paying.
Card habits that make this rare
- Format in-camera between shoots rather than deleting frames individually. Deleting individual images across many sessions is precisely what causes the fragmentation that ruins RAW recovery.
- Offload to two places before formatting anything.
- Buy cards from somewhere reputable. Counterfeit high-capacity cards are common and fail in exactly the way that destroys a shoot.
- Retire cards after a couple of years of heavy use.
- Carry more cards than you need so you never have to clear one mid-shoot.
If you are mid-panic, the useful summary is short: stop using the card, image it, scan it, and check file sizes rather than thumbnails before you pay anybody anything.
Tools for RAW photo recovery
These are paid-product links from active UrRecover affiliate relationships. Use the free scan or preview first where available, compare what each tool actually finds, and do not buy if the files you need are not visible.
- Wondershare Recoverit — A tracked option for photo and media recovery.
- MiniTool Power Data Recovery — Scan for RAW files and compare preview results.
- EaseUS Data Recovery Wizard — A second tracked scan-and-preview option.
Recovery results depend on the device, the failure and whether new data has overwritten the missing files. Save recovered files to a different drive. For physical damage, unusual noises or an unstable RAID, stop and consult a professional recovery laboratory.
For camera raw formats specifically
CR3, NEF and ARW carry proprietary headers, and generic carvers recover the thumbnail rather than the raw data. Stellar Photo Recovery knows those formats, which is what makes the difference on a card you have already tried once.