Digital booths
Spot sharpening halos before they reach a booth print
Too much edge sharpening can create bright or dark outlines around faces.
An over-sharpened portrait may look crisp on a small preview but show outlines around hair, glasses and text when printed. Check the original and final export at the same physical size.
Recognise the edge signature
Sharpening increases local edge contrast. Strong settings can create a light or dark halo beside an edge and exaggerate noise or demosaicing artifacts. A crisp edge is not proof that the camera captured more real detail. Sharpening cannot restore missing focus detail, so compare the untouched capture before increasing its strength.
Evidence: Image editing software documentation
Compare a neutral export
Save the camera original and an export with minimal sharpening. View both at the strip’s intended print size, then inspect hair and high-contrast borders. Keep resizing and sharpening steps consistent so you are not comparing different output scales.
Sharpen for the final size
Apply modest output sharpening only after the crop and resize are fixed. A file sharpened for a large screen may look harsh on a small print. Preserve the untouched source and record the export settings if repeatable results matter. Check a high-contrast eye or hair edge and a smooth cheek; the first reveals halos while the second reveals amplified noise.
Evidence: Imaging 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.
- Adobe Photoshop, Sharpen photos and artworkImage editing software documentation
- Adobe, Camera Raw Process VersionsImaging software documentation