Data Recovery Case File · Cameras, Drones & Cards · The Photos in a Format She Didn't Recognise

The RAW blind spot: why consumer tools find every phone photo and lose the DSLR's — the mystery files identified as the missing pictures, the failed eject decoded as the original crime, and the whole collection delivered in a form that opens

Her enquiry described a half-success stranger than failure. A USB stick "used for keeping photos — phone and digital SLR generated," which "wouldn't eject and is now showing as corrupt/unreadable." She did the sensible first thing — ran a consumer recovery tool — and got the puzzle: "I have recovered phone photos, but can't see any digital SLR photos. I'm not sure whether they have not been recovered — or recovered in a format I don't recognise and can't open. Lots of other files there, but not sure what they are." Her second guess deserves the credit: it is very likely exactly right, and this page decodes why. Phone cameras write JPEGs — the most universally recognised file on earth — while a DSLR shooting at quality writes RAW files: proprietary, camera-family-specific formats that consumer recovery handles badly at both ends: carvers with thin signature sets miss them, and even when recovered they arrive as unopenable strangers on a computer without the right software. Her "lots of other files, not sure what they are" was, in all probability, the photographs — present, recovered, and unrecognised. The professional job is to find them properly, validate them by rendering, and hand them back in a form that opens.

The decode: two cameras, two formats, and one blind spot

Why the phone photos sailed through: her phone's pictures are JPEGs — the one image format every recovery tool, however basic, knows by heart: its signature is the first page of every carver's handbook, its structure is simple, and its recovered files open on anything. Consumer recovery is essentially built around it. So the tool's success on the phone photos wasn't luck; it was the tool operating exactly inside its comfort zone — which makes its silence on the DSLR set the diagnostic, not the phone set's return.

Why the DSLR photos vanished — twice over: a DSLR shooting at quality writes RAW: the sensor's data in a manufacturer's own container, different per camera family, larger and more complex than JPEG. Consumer tools stumble on RAW at two separate hurdles. Recognition: a carver only finds what its signature list names, and thin lists skip or truncate RAW files entirely — the photos never surface. Presentation: even a recovered RAW arrives on most computers as a stranger — an unfamiliar extension no double-click opens, often stripped of its name by the carving process — and sits in exactly the pile she described: lots of other files, not sure what they are. Either hurdle alone produces her result; together they explain it completely. The honest translation of her half-success: the tool didn't prove the DSLR photos gone. It proved itself unable to introduce them.

The professional difference, and the original crime: the proper job runs on the image of the stick, never the stick itself, with a carver whose signature coverage spans the RAW families — every candidate frame identified by its internal structure, validated by actually rendering it (the only test that separates a photograph from a coincidence of bytes), and delivered in double form: the RAW originals, openable, plus universal-format previews alongside so nothing in the collection is ever a stranger on her machine again. And the case's first cause deserves its sentence: a stick that wouldn't eject was a stick with writes still in flight or a filesystem already wedged — the corruption that followed is that moment's signature, and the doctrine is the one this archive gives every mixed-use photo stick: transport copies, keep originals elsewhere, and when an eject fails, stop — don't pull, don't retry the port, and let the next read be a write-blocked one.

On the bench

The stick was imaged write-blocked behind the DeepSpar USB Stabilizer 10Gb — its consumer-recovery career ended — and OSForensics carved the copy with the coverage the case had been missing: JPEG and the RAW families both, every candidate validated by rendering. The mystery resolved exactly as her second guess had predicted: the DSLR's photographs present in numbers, recovered as proper RAW files with their structure intact — the earlier tool's "files I don't recognise" identified, superseded, and completed. The collection was reconciled against her partial recovery, de-duplicated, and delivered in the double form that ends the strangeness: RAW originals plus universal previews, every frame verified open before handover.

The outcome

The DSLR photographs recovered in full alongside the phone set — carved with proper RAW coverage, validated by rendering, delivered openable with previews beside them. Free assessment, one fixed written figure including VAT, no recovery, no fee. The blind spot, decoded for every two-camera household: consumer recovery lives and breathes JPEG, so phone photos return while DSLR RAW files are missed or come back as unopenable strangers; a pile of "files I don't recognise" after a recovery is very often the photographs themselves, waiting for identification rather than resurrection; and the diagnosis to reject is the tool's silence — a format not found is not a photograph not there. Her instinct — maybe they're recovered and I just can't open them — was the sharpest line in the enquiry. It usually is.

Our case files are drawn from genuine enquiries received by our laboratory over the past ten years, anonymised to protect client confidentiality. Each one describes the diagnostic and recovery procedure our engineers apply to that fault, using the equipment listed.