“Let’s go and escape with this little seed of an idea,” Pawel Pogorzelski, a Polish-born Canadian cinematographer, says in relation to his work with Ari Aster on films like “Hereditary,” “Midsommar” and the newly released “Beau is Afraid.” We talk about the meaning of “Beau is Afraid” according to Pogorzelski, the behind-the-scenes for the filming of “Midsommar” and being attentive as a cinematographer.