just a simple (it seemed) question on gamut shapes…
I have been looking at the 3D gamut plots for canon i9900 (dye) and different pigment printers (Canon, HP, Epson). What really caught my eye is different gamut coverage in ORANGE areas. The dye based ink set shows nice convex (outward) shape, whereas all pigment ink sets show straight line or concave (inward) shapes. Its not only the ORANGE area, but its most visible there. All the tested printers have an extra Red ink, essential upgrade for an extended gamut volume.
Anybody can explain this phenomenon, please? Steve, any comment?
Why some mixing gives convex shape and other gives concave one???