Let’s get technical. Why does an look different from everything else? The answer lies in three specific choices:
"For that shot, I underexposed the film by three stops. I pushed the development in hot chemicals to bring the grain out. Then, I scanned it at 6K and ran a filter that amplifies the noise rather than reducing it. Most filmmakers fight the static. I invite it to dinner."
A Detailed Look at Ellie Luna’s Career and Ultra Films Productions