From about the middle of last year, the consensus seemed to be that inkjet had finally attained the same quality as offset lithography or flexography. How has that consensus been reached when the areas that inkjet still finds difficult are things like large regions of mid-tone tints? You simply don’t see press vendors, or buyers, making such comparisons. Inkjet problem areas are mostly caused by non-uniformity at both the microscopic and macroscopic levels. Martin Bailey explores how these spatial variations can be remedied and discusses an emerging ISO Technical Specification (ISO TS 18621-21) that is designed to objectively characterise some of these types of variation.