If you belong to the 35-40-year or older age group, you have very likely used a non-digital, single-lens reflex camera (SLR). On the other hand, if you are younger than 35, digital is likely all you know. Fortunately, I'm old enough to be part of one of the former group. I used to carry several dozen rolls of Kodak Ektachrome or Fuji Velvia/Provia films whenever I traveled somewhere to cover VW events, and spent much money on developing these films for magazines.
I started using a digital singlelens reflex