How to Tell a Surface Mark from a Stain in a Photo Copy
By ImgHeal · Updated
Use careful observation and comparison captures to investigate a mark without rubbing, wetting, or scraping the original photograph.
Explore this topic: Assess photo damage
Observe without testing the surface
Record the mark's shape, color, and relationship to the image. Avoid touching it to determine whether it is dirt. A digital view cannot reliably identify the material or show whether the image layer is fragile. Keep any diagnosis provisional and photograph the whole object before considering digital cleanup.
Compare safe lighting changes
For a stable print, compare broad light from two directions without flexing the object. A raised deposit can cast a changing shadow, while discoloration may remain similar. Reflections can complicate both. If the surface is sticky, flaking, or otherwise unstable, stop handling it and obtain specialist advice about a suitable capture.
Edit the best recorded copy
Choose the capture that preserves the most useful scene detail. A digital repair may reduce a distracting mark, but it does not clean the print or identify its cause. Check neighboring texture and edges after any automated restoration. Keep the condition image and the viewing version as separate records with a short explanation.
Check before finishing
- The mark was observed without rubbing.
- Lighting comparisons were safe for the print.
- Physical condition and digital appearance remain distinct.
Continue with a related guide
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