The Canon EOS Rebel T6 DSLR Camera is the best film camera under $300. It has an 18-megapixel CMOS sensor and a DIGIC 4+ image processor. It also has a 9-point autofocus system with a single center cross-type focus point. The Canon EOS Rebel T6 DSLR Camera can shoot up to 3 frames per second and has a maximum ISO of 12,800.