Tag Archives: digital image recovery

How to fix and open recovered photos?

Unfortunately it is a common problem that you are unable to open recovered photos after using file recovery, undelete or photo recovery software on a SD card. In this post I will make some assumptions: Photos are on a memory card and therefor: File system is a variation of FAT  (FAT32, exFAT) File type is… Read More »

Recent changes to JPEG-Repair Toolkit

Changes to JPEG- Repair from version 2 > I feel quite confident in saying, that IF a file is repairable (so, contains JPEG data + we have reference header), JPEG-Repair Toolkit can help you do it. So if you need to fix corrupted photos, you may want to give it a try. 2.5.91: Most work… Read More »

Bottom half of JPEG is missing or grey or solid color

There’s basically three things that can be wrong if a JPEG opens but is partially grey:

1. File is too small. Let’s an average JPEG shot with same camera and settings is 4 MB and the ones that are damaged are like 1 MB or 2 MB. Then probably half the data is simply missing. These files can not be repaired.

2. Normal file size. Either part of the file does not contain image data or file does contain image data but is interrupted by some invalid data.

If part of the file does not contain image data then this is sometimes easy to spot using a hex editor. All of a sudden ‘random’ binary data stops and changes to FF FF FF or 00 00 00 etc.. Repair: Impossible.

In case the data is however is there but it is interrupted repair is often possible. JPG-Repair tries to detect and will try to get rid of the invalid data, however this does not always work. Current version detects invalid JPEG markers, common damage due to bad sectors and some type of corruption I observed a few times with images shot with certain Samsung phones.

Can corrupt Canon CR2 RAW photos be repaired

Can corrupt Canon CR2 RAW photos be repaired? Edit 2nd of March, 2019: After having successfully repaired a number of corrupted CR2 (Canon RAW files), I now accept CR2 files for my photo repair service. Unfortunately I know of no software that can successfully repair corrupt Canon CR2 RAW Canon files. This known incapable software… Read More »

Photos on SD card are corrupt

When you discover photos on your SD card are corrupt you should: Do as little as possible (read: nothing) with the card. Do NOT run chkdsk on the card itself! Create a disk image of the card immediately! There are free and payed ways to try to recover or repair your photos. So I’ll be… Read More »

Recover Canon CR2 RAW photos

Recover Canon CR2 RAW photos. Canon CR2 raw files contain unprocessed raw sensor data. Depending on the camera’s resolution they tend to be quite large and due to typical usage patterns (preview photo > dismiss/delete file > shoot new file etc.) the files become easily fragmented. Shoot video too? Then fragmentation is very likely to… Read More »

MP4 video recovery observations

I recently did a MP4 video recovery from a memory card (SD). It contained combined JPEG photo and MP4 video data, shot with a Canon EOS 600 D. Previous recovery attempts done by the customer resulted in the majority of the files being corrupt. All MP4 video was unplayable. Most recovered MP4 videos were tiny… Read More »

Photo recovery: Easeus Data Recovery vs JPEG Recovery LAB

Comparison between various tools for photo recovery The case of the corrupt JPEG files Sometimes it turns out photos can not be repaired after recovery. Best thing to do then is to use better photo recovery software and recover the files again. Files were originally recovered using Easeus Data Recovery. Case: Contacted via Facebook Chat,… Read More »

The corrupt JPEGs that weren’t corrupt

Often I am asked to repair JPEGs that can be opened but don’t display correctly. Many of those look okay for some part, but turn into a grey area at some point. Repairing these files (or recovering them as we’ll see) isn’t always straight forward and sometimes requires some detective work. Half grey photos In… Read More »

Corrupt CR2 and NEF files due to file fragmentation

There are many tools available to recover lost or deleted digital photos from memory cards. Most of them are unable to recover non contiguous or fragmented files. As a result fragmented files recovered by such tools will be corrupt. In such cases JPEG Recovery LAB can help you recover fragmented files. However, recovered files may… Read More »