Digital booths
Keep colour and monochrome strip copies
Make the mood change reversible in your own archive.
A black-and-white strip can feel right for an evening while the colour photographs remain useful later. Preserve both roles deliberately.
Keep source and interpretation
Retain the original colour pictures before making a monochrome sequence. Save the finished black-and-white strip as an edited version rather than overwriting every input. For historical scans, document whether the object was monochrome or whether your conversion created that appearance after digitisation.
Compare face separation
Check the converted strip for details that used to differ mainly by colour. Hair, clothing and backdrop can merge into similar grey tones. Adjust a copy with the whole sequence visible so the first frame does not receive a dramatically different treatment from the last.
Name both outputs clearly
Use related filenames with a plain colour or monochrome suffix. Choose the appropriate copy for the destination, while keeping the source elsewhere. If displaying an old portrait, identify substantial edits in the caption rather than allowing an atmospheric rendering to become mistaken for the original photographic object.