If you want to target right kind of people then you have to specify what is it for.
Photo Editors: Are you looking for designers more like people who can play with Corel, CS6,
Serif. Are they for website presentation? template, flyers..
Photographers: There are many categories of photographers. I usually separate them into
mainly two categories. 1. Indoor Photographers 2. Outdoor Photographers.
Film Makers: Cameraman or Director? What sort of film making? short drama, advertisement, full movie, porno, etc etc