Soviet Cinematic IR in Soy Cuba / "We became friends with infrared"

I don't know a thing about cine stuff, but a friend pointed out to me that this film was partially shot on infrared stock. Fun quotation here:

“We wanted the cane white because sugar is white — it was sugar,” according to Calzatti. “Urusevsky had used infrared before. Russia didn’t produce infrared film, so I came to a manufacturer in Kazan who made film strictly for the military – for shooting the other side of the moon, for spying on American objects. They hand-made infrared for us in what looked like a kitchen. It was of very high contrast and very low sensitivity — around 30 ASA — and it was on celluloid instead of tri-acetate. We had no infrared meter, and no infrared marks on the lens, so many times the results were unpredictable. After a while we just used our instincts, and we became friends with infrared. What you see in the film is okay, but we shot much footage to select from. Each scene was done for 15 or 20 times, so it never was filmed spontaneously.