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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.

No matter if the folder has been deleted, the card has been reformatted in the body, or the camera won't see the card at all, the pictures are generally still on the card until something new covers them up. Here's the honest picture before you post a card in from Maidenhead: what types of jobs free recovery software really can complete, why a 50MB RAW image is most commonly recovered as a 5MB preview image, and how our recovery method recovers the whole file. We only take cards and drives, never phones, and from a computer we just need the drive rather than the whole machine.

Only pay if we recover your data, on most jobs Diagnosis free, then a fixed quote Get a quote, then post it in from Windsor, Slough or anywhere else

Describe the fault to an engineer
0800 6890668

Lost photos: what each symptom is telling you.

None of these? Run the triage →
The symptomThe likely causeStart here
Mistakenly erased picturesDeleting a picture only deletes the index reference, nothing else; the actual image remains at its original location until it is overwrittenNo longer use the card
Was formatted in the camera bodyThe body places a new file system over the images below it; in most cases they are untouchedPromising, so long as nothing else was shot
‘Memory card error’ or the body wants to formatIndex damage to card; frames below usually remain intactRefuse to format, regardless of how many times asked
Files that were recovered but won’t open with any softwareOnly previews or fragments of images come back, not whole RAW image dataIt is quite likely that the complete frames are still intact
Banded colour across a RAW image, or grey from halfway downThe image was split across the card or overwritten in partRebuilt according to the format’s own internal rules
Clips have been recovered that will not playNothing breaks up across a card like 4K video doesPut together again in the order expected by the codec
Where to send it: first get a quote, by phone or with the form, then send it using a tracked, insured service to the Guildford intake laboratory, or drop it off there yourself (Monday to Friday, 9am to 5:30pm, no appointment needed). We will cover the cost of the postage back to you. From a laptop, PC or Mac, we just require the drive out of your computer; storage soldered to the board (T2 and Apple silicon Macs, soldered laptop flash) is not taken on, and if you're unsure as to type, call us first. From a server or RAID set, just send the individual drives, all clearly labelled by bay. From a NAS, send the disks, each labelled by bay, if they come out; otherwise, send the entire NAS unit. A single external drive comes whole, with its cable and power supply. If you wish to review your packaging before posting, contact an engineer who will walk you through the process over the phone. All steps involved with the postage process are listed on the postage page.

Where free photo recovery tools stop.

File size gives it awayAll NEF, CR3 and ARW files include a small embedded JPEG which can be used as an image to show on the back of the camera (the body needs something to display). Basic utilities use this preview as a marker of success for a recovery and do not attempt to recover the rest of the file; a 50MB image is returned as a 5MB preview.
The real difficulty is fragmentationGenerally speaking, large files do not get written in one single, continuous pass. A simple "carver" will grab the first block of data, and then cease when it reaches an area where the blocks were split apart. For small images like JPEGs, this works just fine, however for recovering larger files such as RAW images, video footage etc., this type of carver will completely fail. Because of this, our recovery method follows the layout of each individual file format in order to reassemble these broken files.
No two RAW formats behave alikeBecause CR2 files sit on top of the TIFF format, they are relatively tolerant of damage. However, because CR3 files utilise a more modern container technology, they fail differently. If there is damage to a NEF file, it typically manifests itself visually as green and purple banding. Each camera manufacturer has their own specific way of wanting their formats handled and no one tool handles them all (RW2, ORF, RAF, DNG and ARW).
What deleting really altersWhen either deleting or formatting data on FAT or exFAT file systems, only the cluster chain holding the deleted data is released. Nothing else on the memory card is affected. This fact alone is why recovery is possible at all, and it also explains why you can shoot another photo directly onto the memory card and overwrite the photo you wanted to recover.

What happens between arrival and return.

01

Booked in, then assessed at no cost Free

Nothing is chargeable until you say yes. Every item gets a case number of its own immediately upon receipt, an engineer determines what has failed, and you get a clear picture of which files have a real possibility of being recovered. The single quote that follows is fixed, written down and does not cost anything.

Diagnosis at no costOne fixed quote, in writingNothing signed
02

The original is never touched

The very first step taken before any other actions are performed on your memory card is creating a complete image of all sectors. All subsequent processes operate against this image, therefore no changes are made to the original media.

A copy taken sector by sectorNothing written to your media
03

Either the index is mended, or we carve

If the index portion of the file system is repairable, the photos will be returned to their original configuration including filename, folder locations and date/time stamps. If however the index portion is unrepairable, carving will take over. Carving reads each format according to its own specifications, thus rebuilding full RAW frames from fragments rather than dressing up preview images as results.

Names and folder structure keptComplete frames, not previews
04

Every image is opened on screen

No files will leave this location until all recovered frames are opened and viewed at their full size for visual inspection. A report with totals means very little; only the photographs themselves appearing on a screen show how well the recovery was done.

Inspected, not merely talliedEach image checked at full size
05

Opened, verified, and sent home

You don't get charged anything until you've confirmed and authorised that everything is fine after seeing the entire list of what was recovered. Any recovered items are returned via brand-new storage media and the postage costs for these are covered by us. We do not consider a project complete here until we receive confirmation that you have been able to successfully access and review every item you received back.

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

What tends to show up first

  • A RAW file is actually a collection of multiple files within a single container: raw sensor data, associated metadata, along with a low-resolution JPEG preview image. Some applications might extract that preview, then declare it successful, while never even touching the underlying photograph(s).
  • CFexpress Type B is simply an NVMe storage device packaged inside a card-shaped enclosure: if it is treated like a CompactFlash card, or placed into the wrong reader, a perfectly sound card can be written off as useless.
  • Footage is the hardest carving operation to execute: a single 4K video clip could literally be spread across hundreds of separate runs. Ordinary carving tools typically cannot properly reassemble them. As such, the frame boundaries must always be known before attempting to carve footage.
  • HEIC is also a photograph: specifically, this is the format used by smartphone cameras when capturing photographs. These photographs end up being copied onto computers, cards, and/or extra backup drives after being backed up. We are interested in accepting copies of these photographs on either a card or a drive (if the copy came off a computer, then we'll accept the drive and not the entire computer). We do not accept handsets.

Nearly every photo recovery situation ultimately relies upon one piece of information: what the card was instructed to do next. If you store it away right now, your chances of recovering your photos are greatly enhanced. But if you continue taking new pictures, then there is a good chance that each subsequent new picture will be written over existing data that you wish to recover. Not stopping is expensive, but stopping is essentially cost-free.

From the casebook, lately.

MH · MHD-2026-6827ON RECORD ✓

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

Six hundred images with nothing worth printing; only previews were retained by the free software. The card had been left idle ever since, and therefore imaged cleanly; from there, the CR3 originals were reassembled piece by piece. The whole gallery made its way home at full size, forty frames more than the free tool had managed.

640 frames, full resolution72 hours spent at the bench

Before it comes to the lab.

Do these now

  • Take out the card and put it somewhere secure
  • Instead shoot on a different memory card
  • Let us know your camera model (and the format(s) it records)
  • Get a price quote first, then send the card in even after some type of tool has been used on it

Things best not done

  • Just formatting the card to remove the warning
  • Giving it another shot in the camera before returning the card to storage
  • Successively running many programs on the original
  • Treating the recovered preview as the final product

Questions we are asked about photo recovery.

Will free software bring deleted photographs back?

Sometimes. With cards stored immediately upon encountering problems, free tools will usually work adequately with small, non-fragmented JPGs. RAW and video files are another matter: fragments and embedded previews get reported as recoveries when all you actually have is a thumbnail or the opening scrap of a file. Where photos matter, make sure to create a full image of the card first, and have a good understanding of what constitutes a successful recovery.

Why do the recovered RAW files look wrong?

The two most common causes for this include either the tool lifting only the small embedded JPEG from each RAW image, or capturing only the initial portion of a fragmented file which was being stored on the card. In both instances the actual image information captured by the sensor often remains intact, and if no other information has been added to the area of storage where the images reside, a rebuild can be done based upon the specifications of the format to recover the original data.

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

It rarely is. When a format is performed in the camera body it creates a brand-new file system while leaving all of your captured frames in their respective places. If you leave the camera alone and do not shoot any more exposures with it, the chances of recovering your lost files are good; every further exposure you take reduces them.

Photos still sitting on a phone?

Unfortunately, we cannot provide assistance. Smartphones and tablet computers are completely beyond our scope. Once you've transferred those images to a memory card, another removable hard drive or to a computer, then the memory card or hard drive is welcome here (from a computer, we'll accept the hard drive but not the computer itself), but we cannot assist you with the smartphone or tablet, and it is better to know that before you post anything.

Switched off, it keeps every chance it has.

Every additional power-up asks for even more of a drive that is already starting to fail. First open a case with us, and let the free diagnosis tell you how much remains.

0800 6890668