To the Editor: As recent articles attest, increasing numbers of low-budget movies are now being made thanks to the availability of moderately priced digital cameras and computer-editing applications. No problem with that. However, when reporting on these projects, please don’t refer to them as “films.” Except on rare occasions, contemporary low-budget producers are not making “films.” These days, they’re making “files.” OK, let’s compromise and simply call today’s cinematic output …