I have been experimenting with photography this week, and taking an on-line course on food photography. I own a nice Nikon digital camera which I generally have used as a point and shoot, set to automatic. In my class I am finding out how to manipulate the f-stop, ISO and shutter speed to achieve some dynamic effects.
With a low f-stop, one can create images with a shallow depth of field, a focal point and light, slightly out of focus backgrounds.
The more dramatic moody effects are a matter of dark backgrounds and objects, a higher f- stop and a single indirect light source. A higher ISO gives a little graininess to the photo, which I like.
I still find it difficult to fiddle with all the settings to achieve some predictable effect, but the effort is enjoyable and it’s possible that after all this time of being entirely baffled by photographic techniques, I could actually learn something about photography.