Electronic amplification of dark areas creates noise degrading image quality. Shooting action also requires faster film to freeze motion. Equipment costs are less than a tenth of professional digital cameras. This keeps overhead down, costs which must be passed on to the client. Digital cameras must process and store data between each shot while film cameras can record images at 5 or 6 frames per second.
Film can store more data.
This is especially important on location. Two gigabytes of information can be extracted from a single roll of 36 exposure film. Most laptops cannot store the information contained on six rolls of film. Reasons for digital output No shipping time or delivery costs when sent over the Internet. This beats Fedex by a day and many dollars.