One roll of Harman Switch Azure 125 – 120 Creative Colour-Shifted Negative Film ISO 125/22° in C-41 Process Edge Numbered 1 to 19 Harman Switch Azure 125 in 120, for anyone who wants their surreal colour on a bigger negative. Blue light records in the red channel and red records in the blue, so skies turn orange and pink, reds go blue, and yellows come back a bright azure. Shoot it at ISO 125 in open daylight, meter for the mid-tones, and bracket when the scene is very bright. There is no orange mask, so expect a purple looking negative once it is dry. It processes in standard C-41 with everything else in the tank, and how it scans depends a lot on the machine, so let us know it is Azure and we will treat it as a creative stock.