It shouldn’t come as a surprise that documentary filmmaker Lance Oppenheim’s feature film directorial debut “Primetime” (A24) is as grainy and dimly lit as it is. The visual effects are befitting the gritty and gloomy subject matter: a dramatized look at the Dateline NBC reality show To Catch a Predator, a hidden camera program in which adult men were confronted and then arrested for arranging sexual encounters with underage people.










