Colour Pinsta image of daffodils and a car

Pinsta & Full-Colour Instant 4″x5″ Pinhole Prints Without A Darkroom

A few years ago I remember I was scrolling through Instagram when something caught my eye. It was seemingly a video of a black and white paper negative being rocked in a tray of chemicals in broad daylight. Within seconds, the monochrome negative turned to a full-colour positive image before my eyes. I was astonished and set about discovering how this magic trick was done. I had discovered the strange world of RA4 reversal.