We got snow in the morning and sun in the afternoon, so a great time to practice some more cyanotypes. This one is from a 4×5 negative I shot in portrait in my 1913 5×7 Kodak Empire State No. 2 with its Bausch & Lomb Tessar lens. Negative is well-balanced and sharp. Exposure was 12 minutes in mid-afternoon sun on the first full day of Spring. I used some hydrogen peroxide to speed up the oxidation process to get the brilliant blue. Just a dash in the water bath was enough to make it pop immediately.