Make & keep
Compare repeated booth backgrounds without declaring a match too soon
Use shared visual details as clues while keeping identification tentative.
Two strips with the same curtain, seat or border may come from the same booth, but a copied backdrop or later installation can look similar. Record the comparison as a hypothesis and preserve the images that support it.
Choose comparison details
Compare stable features such as a seam, tear, lighting position or printed border. Note which details appear in both scans and which differ. Do not rely only on a common colour or generic pattern.
Align without altering masters
Make working copies at the same scale and place them side by side. If you overlay them, retain the separate originals and record any rotation or crop used for comparison. Keep a note of the source files and the date of the analysis.
State the limit
Write “possibly the same backdrop” unless a dated location record or other independent evidence confirms it. Ask another reviewer to assess the distinctive details without seeing your proposed conclusion. A useful comparison shows both matches and contradictions.