Category Archives: nef

Why is photo repair more expensive than photo recovery?

In this post I’ll try to explain why photo repair is relatively expensive compared to photo recovery. Why is it many photos can be recovered at a fraction of the cost of repairing just a few images?

Recent changes to JPEG-Repair Toolkit

2.8.101 # Adds MCU clone tool To repair a JPEG you typically need to remove corrupt data which affects alignment of all data following corruption. To re-align you then insert stuff bytes (zeros) which leave a grey horizontal line. In this video I show how I use MCUs directly above the grey line to replace… Read More »

Nikon RAW NEF and STOP DJVU ransomware

It turns out, RAW Nikon files (NEF) are easier to ‘repair’ even than RAW Canon files. I will expand this post this week, and add a video, but full resolution JPEGs can be extracted from corrupt NEF files affected by STOP DJVU without the trickery required to repair Canon CR2 files. It appears the full… Read More »

RAW data recovery

RAW can mean several things with regards to data recovery; ‘You can recover your RAW photos from a SD Card with a RAW file system using RAW file recovery’. With regards to file and photo recovery, RAW data recovery can refer to three different things: The recovery method; RAW vs. file system based recovery It… Read More »

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 »

Recovered photos are corrupt – Won’t open

Recovered photos are corrupt and won’t open after you tried to recover them using undelete, file recovery of photo recovery software? Here’s a few things to try. There are a huge number of JPEG recovery and undelete programs available on the web, many even for free. However, the vast majority of these can only handle… Read More »

How to repair a corrupted JPEG photo

How to repair a corrupted JPEG photo may seem a simple question but the answer isn’t. Many people seem to expect to run some JPEG Repair software and that fixes it. And that’s what many of my competitors promise. If only it were that simple. Now, let’s take this one step at the time to… Read More »

Observation with regards to corrupted DNG and NEF RAW photos

RAW photos such as DNG and NEF often embed JPEG photos. In case of file corruption it may be useful to ‘recover’ these JPEGs in case repair of the corrupted RAWs is not possible. I was reading this article: “Lucky Accidents: Viewing Corrupted JPEG Photos in a New Light“. In the comment section the author… Read More »