In the early to mid-twentieth century, Pyro found its most famous advocates. Ansel Adams, Edward Weston, and other Zone System pioneers relied on Pyro for its long tonal curve and ability to handle extreme contrast scenes. Adams’ negatives from Yosemite, printed decades later, still exhibit the smooth highlight roll-off typical of Pyrogallol development. Pyro allowed these photographers to “place” tones with mathematical precision — the foundation of the Zone System itself.

The AGO Film Processor bridges home development and lab-level consistency. From 510 Pyro to C-41 and ECN-2, it saves chemistry, compensates for temperature drift, and delivers repeatable, professional results at home. Not perfect, but a game-changer for anyone serious about film developing.