Digital booths
Recognise colour fringes caused by lens chromatic aberration
A purple or green edge can come from the lens, not the subject’s colour.
Bright hair against a dark backdrop may show a coloured fringe that survives normal white-balance changes. Lens chromatic aberration separates wavelengths and can lower contrast near image edges.
Check where the fringe appears
Lateral chromatic aberration often becomes more visible away from the image center, where colours can separate around high-contrast edges. Compare the same bright-dark boundary near the center and in a corner. A colour cast across the entire image suggests a different cause.
Evidence: Optics engineering guide
Test without heavy sharpening
Capture the same subject at the normal booth distance and inspect the original file before applying sharpening or resizing. If available, compare another camera lens or a corrected raw rendering. Strong edge sharpening can make a small fringe appear more obvious.
Correct the lens effect carefully
Use the camera’s lens correction or a matching profile on a copy, then inspect hair and glasses edges for halos. Do not use a global white-balance change to remove a local edge fringe; that can shift skin and backdrop colours while leaving the optical artifact. A matching lens profile may compensate for lateral colour separation, but compare the original and corrected copy at centre and edges before applying it across every strip.
Evidence: Image-editing software documentation
Sources & further reading
Sources for the specific facts and product descriptions above. Our worked examples, interpretations and practical suggestions are original editorial guidance.
- Edmund Optics, Wavelength Effects on PerformanceOptics engineering guide
- Adobe Lightroom Classic, lens corrections and chromatic aberrationImage-editing software documentation