I upgraded from a point-and-shoot to a Sony NEX a few months back. I think I've made substantial progress with regards to many aspects of photography like composition, the rule of thirds, ISO, exposure (shutter speed, exposure compensation, exposure bracketing followed by exposure fusion in Photomatix), low-light photography, using a tripod, using a timer to avoid camera shake, etc.
But I can't figure out how to control the aperture to take better photos. I just leave it to the camera all the time (Program mode), while controlling the other settings mentioned above.
Note that I don't shoot fast-moving objects (sports, people, kids, pets, wildlife, etc) so blur is not a problem. The other thing I can think of that control over the aperture gives me is depth of field control, but I can't think of ways to use that to my advantage. Can anyone give me some tips?
In case it matters, I have a f/1.8 35mm and a f/2.8 19mm primes.