AMERICAN CINEMATOGRAPHER ASCMAG.COM Preparing to shoot at sundown. brightness outside. One last tip: I've sometimes put CTO or CTB on a mirror to bias the color of reflected light coming into a room. Maybe I want to warm up the reflected hard mirror light against the cooler ambient daylight to have warm sunset streaks. If you do this, just remember that any gel you use will be double its strength because it affects the light color (and light intensity) twice; the light passes through the gel once before it hits the mirror, and then it bounces off the mirror and bounces back through the gel again. So, a ½ CTO filter on a mirror will have the effect of a Full CTO. Worthy Challenge I've often said that one of the hardest jobs for a cinematographer is the daylight exterior. That might sound strange, but maintaining a consistent look over the course of a day or even days requires every tool in the cinematographer's arsenal. Spending a full day (or two or three days) shooting a day-exterior sequence that will only last a moment onscreen can be some of the most challenging work you'll ever do. Take a deep breath, plan out your day, and hope that Mother Nature is on your side. Using open shade is a simple way to achieve an elegant look. AUGUST 2021 / 15http://www.ASCMAG.COM http://www.jlfisher.com http://www.jlfisher.de