How to Get Evidence Image Handling Right
Handling photographs used in claims, disputes and investigations.
Imogen Clarke
Why does it matter?
Edited images lose evidential value, and the handling process must show the file has not been altered.
What are the numbers?
- Originals unaltered originals are the evidence
- Metadata capture data supports authenticity
- Chain of custody records who handled files and when
- Enhancement any processing must be documented and reversible
What should I do?
- Preserve originals with metadata intact
- Work on copies only
- Document every processing step
- Record file handling and transfers
- Store files with restricted access
What should I avoid?
Avoid:
- Editing original files
- Stripping metadata during transfer
- Undocumented enhancement
- Files passed around without records
When should I get help?
Short answer Bring in help when images may be used in proceedings.
Where this comes from
- National Institute of Standards and Technology — Digital evidence
- IPTC — Photo Metadata Standard
The figures and practices above come from the sources listed.
Working on something like this?
We take on Image Editing & Retouching work for teams who want it done once, properly. Tell us what you are building and we will tell you honestly whether we are the right studio for it. Start a project.
Where to go next
Spotted something wrong? Report an error on this page. We correct on the page and say what changed.
