Find, save, check
Chapter 06 / 18
Look at a photo three ways
First say what you can see. Then check the file and the story around it.
Image, file, context
The photo shows a door, a clock and a sign. These are observations. The file layer may have size and EXIF data. The context layer asks who posted it, when, and with which words. Check all three.
One result has limits
EXIF can change or be removed. No EXIF does not mean ‘fake’. Reverse image search may find nothing. An AI detector can be wrong. A valid C2PA signature alone does not prove that the scene or caption is true.
Study the photo
Enlarge ↗Read as text
- Content
- Technical
- Context
Same terms in both languages
Keep these words
- Metadata / EXIF
- Data about a file / a metadata format used in photos.
- Reverse image search
- Using an image to look for similar or older copies.
- Provenance
- The source and history of an item.
- C2PA / Content Credentials
- Signed history claims linked to content.
A small example
Let’s do it together
A post says ‘Outside Liman today’. You find a copy of the same photo from last year.
Save the new post and old copy with their sources.
Compare the door, shadow and small details. Is it really the same image?
If the old record is sound, say it does not fit the ‘taken today’ claim. Say if the first photographer is unknown.
From my research notes · Real record
Suez: look at two images first
Look at the same area on two dates. First say what changed. Then read the source to discuss why.
11 March 2021

27 March 2021

Read the record
- Match the coast shape. Check that you are looking at the same area.
- Write both dates. More visible ships is an observation. Each ship’s identity is a separate question.
What I can write
These two records help us compare the visible queue.
Where I stop
These small images do not give an exact ship count or ship identities.
These are existing public records. The images are resized for reading; no new image detail was generated.
Close the notes. Think first.
Your turn
The image has no C2PA data. Can you say AI made it?
Read the explanation
No. The data may never have been added, or may have been removed. Check the image, file and source history.
Reading record
Only on this browser. These marks are not test results.Sources
I used my study notes and wrote new practice examples. The source PDF is not distributed here.
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