Make no mistake, DSLR’s are capable of producing amazing motion pictures, these cameras makes quality images achievable for very little money so it’s an option. On the flipside shooting 4 or 6K is also a very viable and affordable options too!
Looking back, films aren’t always about flawless images on screen. The original Evil Dead, (Art worked on Evil Dead 2 with Sam Rami and Bruce Camble), and countless other low budget horror films were shot on 35mm and 16mm in the days when grain was as big as a bird on screen, scratches were common, even now sometimes revered for an effect.