My point was, current technology is electronic sensors. Yes, film is still available but photography should be able to be learned with a digital camera. Now, if one wants to teach how to use film with 35mm cameras then thats fine, the knowledge will transfer to some extent. Another good reason to teach a course with film cameras is to introduce a younger generation to the joys of film. But to learn about lens aperture controls and why you would choose one over another, how that would affect your choice of shutter speed, selective focus, and depth of field, etc. These could be learned with a DSLR that allows for full manual control and the feedback would faster in the limited class time allowed. I'm just not sure what inherent advantage other than initial cost, that a basic 35mm SLR over a basic DSLR. Now granted, initial cost is 10-15X or more greater if pricing a new DSLR but a Nikon D70 can be had for a $100 and a standard 50mm f1.8 AF Nikkor can be had from B&H refurbished for $100 so there you have only a 7X initial outlay. And it's getting harder to source reliable full mechanical 35mm SLR's for $30 with lens. So, the difference in initial price may not be more than 2X-4X.