Digital cameras are fine for commercial work where you need to know you've got the image for the client, but they can be too clinical, too perfect. Slowing the process down, randomness, huge expense on film, to get zero results, are some of the joys of using analogue cameras, or a cardboard box. I mix things up by using a range of purchased (I know the f stop) pinhole cameras and homemade boxes, where things get really random. Coupled with antique cameras, a Leica IIb, Pocket Ensign and various Russian models, Zorki's and Zenith's. Developing and printing your own images brings in another dimension.