Photo Value Comparison Forum Moderator Ricalynn shared this list of Photograph values, which tells you relative values for the different pictures before skill/photo quality price modifications.
You can click the camera to do this as well, but it's not recommended.
As your Sim takes pictures, they'll work toward filling photo collections.
Save the really good photos for later to get maximum profit.
Take photos of strangers to work on the Paparazzi challenge.
Photography is a new skill introduced in The Sims 3 World Adventures expansion pack.