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MHDR / Specialist cases / Photographs and RAW files

Specialist work · photographs

Photo recovery in Maidenhead. A 5MB result from a 50MB frame is a preview.

Whether the folder was deleted, the card formatted in the body, or the camera now refuses to read it at all, the frames usually remain where they were written until something new is laid over them. Here is the honest position, before you post a card in from Maidenhead: the jobs free software can genuinely finish, why a 50MB RAW so often returns as a 5MB preview, and the method used here to rebuild whole files. Cards, drives and computers only — never phones.

No fee unless the data comes back Diagnosis free, then a fixed quote Post it in from Windsor, Slough or anywhere else

Describe the fault to an engineer
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Lost photos: what each symptom is telling you.

None of these? Run the triage →
The symptomThe likely causeStart here
Pictures deleted by mistakeA delete edits the index and nothing else; the frame itself remains where it was until it is overwrittenStop using the card now
Formatted in the camera bodyThe body lays down a fresh file system; in most cases the images below it are left untouchedPromising, so long as you shot nothing further
‘Memory card error’, or the body asking to formatThe card’s index has been damaged; the frames underneath usually have notDecline the format, no matter how often asked
Recovered files that no program will openWhat came back are previews or fragments, not whole RAW framesThe complete frames are quite likely still present
Banding across a RAW, or grey from halfway downThe frame was split across the card, or partly overwrittenRebuilding to the format’s own rules
Recovered clips that will not playNothing fragments across a card like 4K videoRejoined in the order the codec expects
If you post it in: use a tracked, insured service addressed to our secure intake lab, and the return leg is paid at our end; if you would rather check the packing first, an engineer will go through it by phone. Each step is set out on the postage page.

Where free photo recovery tools stop.

File size gives it awayEvery NEF, CR3 and ARW carries a modest JPEG within it, so that the body has something to display on the back. Basic tools take that preview, log it as a recovery and go no further; a 50MB frame duly returns at 5MB.
The real difficulty is fragmentationBig files are rarely written as one continuous run. A plain carver takes the first stretch, reaches the break and gives up, which is adequate for a small JPEG and no use at all for RAW or footage. The work here follows each format’s own structure to reunite the pieces.
No two RAW formats behave alikeCR2 sits on TIFF, which makes it fairly forgiving of damage. CR3 uses a newer container that fails in different ways. Damage to a NEF shows as green and purple banding. RW2, ORF, RAF, DNG and ARW each want handling on the maker’s terms, and no one tool covers them all.
What deleting really altersOn FAT and exFAT, deleting or formatting only releases the cluster chain; nothing else on the card is altered. That is why recovery is possible at all, and it is the same reason the next exposure can land directly on the frame you want back.

What happens between arrival and return.

The most recent cases →
01

Booked in, then assessed at no cost Free

Nothing becomes chargeable until you have said yes to it. Each item takes a case number of its own the moment it arrives, an engineer establishes what has actually failed, and you are given a candid view of which files stand a realistic chance of returning. The single quote that follows is fixed, written down, and costs nothing.

Diagnosis at no costOne fixed quote, in writingNothing signed
02

The original is never touched

The first thing on the bench is a complete image of every sector. Everything after that runs against the copy, so your original media is read from and never altered.

A copy taken sector by sectorNothing written to your media
03

Either the index is mended, or we carve

Where the index can be repaired, the pictures return arranged as you left them — filenames, folders and dates intact. Where it cannot, carving takes over: each format read against its own specification, and whole RAW frames stitched from fragments rather than previews dressed up as results.

Names and folder structure keptComplete frames, not previews
04

Every image is opened on screen

No files leave here until each recovered frame has been opened at its full size and inspected by eye. Totals in a report prove very little; what proves the job is the photograph itself, up on a monitor.

Inspected, not merely talliedEach image checked at full size
05

Opened, verified, and sent home

Nothing is billed until you have seen the recovered file list in full and told us to go ahead. What comes back arrives on new media, with the return journey at our cost, and the case stays open at this end until you have opened every file yourself.

You approve the list firstReturned on fresh mediaThe return post is ours

What tends to show up first

  • A RAW is several files in one container — sensor data, metadata and a modest preview JPEG. A tool can lift out that preview, record it as a success, and never touch the photograph underneath.
  • CFexpress Type B is an NVMe device in a card shell — handle it as though it were CompactFlash, or put it in the wrong reader, and a perfectly sound card is condemned.
  • Footage is the most demanding carve — a single 4K clip may be scattered over hundreds of runs, which ordinary tools reassemble badly. The frame boundaries have to be known.
  • HEIC is a photograph too — it is the format phone cameras write, and those files end up on computers, cards and spare drives once they have been backed up. The copies are welcome here; the handset is not.

Nearly every photo case hinges on one detail: what the card was asked to do next. Put it away immediately and the odds sit strongly in your favour. Keep shooting and each fresh frame has to be written somewhere, quite possibly over the ones you want back. Stopping is free; the alternative is not.

From the casebook, lately.

MH · MHD-2026-6827ON RECORD ✓

A wedding gallery, 600 RAWs, and a failed first attempt

Six hundred files, and not one fit to print: the free software had saved only the embedded previews. The card had been left alone since, so it imaged cleanly, and the CR3 originals were reassembled a fragment at a time. The gallery went home at full size, forty frames longer than that tool had managed.

640 frames, full resolution72 hours spent at the bench

Before it comes to the lab.

Do these now

  • Eject the card and store it somewhere safe
  • Shoot on a spare card instead
  • Tell us the camera body and the formats it writes
  • Send it in even if a tool has already been run on it

Things best not done

  • Formatting the card just to clear the warning
  • Putting it back in the camera for one more go
  • Trying a succession of programs on the original
  • Treating recovered previews as the finished job

Questions we are asked about photo recovery.

Will free software bring deleted photographs back?

Occasionally. Where a card was put away as soon as the trouble appeared, free tools manage small, unfragmented JPEGs well enough. RAW and video are another matter: fragments and embedded previews get reported as recoveries when all you are holding is a thumbnail or an opening scrap. Where the pictures matter, take a full image of the card first, and set a clear idea of what a genuine result ought to look like.

Why do the recovered RAW files look wrong?

There are two common causes. Either the tool lifted nothing but the small embedded JPEG out of each RAW, or it captured only the first fragment of a file that had been split across the card. In both cases the sensor data itself is often untouched, and a rebuild carried out against the format’s specification will retrieve it, so long as nothing has since been written over it.

Formatted the card in the camera by accident — is that final?

Rarely. A format carried out in the body lays down a new file system while the frames themselves stay exactly where they were. Set the camera aside and the prospects are good; every further exposure you take reduces them.

Photos still sitting on a phone?

We cannot help there. Handsets and tablets fall outside our work entirely. Once the pictures have been copied off onto a card, a spare drive or a computer, that media is welcome here; the handset is not, and better to know that before you post anything.

Switched off, it keeps every chance it has.

Each further power-up asks more of a drive that has already begun to fail. Open the case first and let the free diagnosis tell you what is left.

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