1.Different types of photography
There is night photography, plant photography, food photography...
The camera, different types of lenses and flash.
Small aperture has the whole picture in focus but large aperture makes the subject stand out as the background is out of focus.
It keeps everything in focus.
The shorter the time that the shutter is open the sharper the photo will be.
Higher ISO reduces camera shake and lower ISO gets the lowest noise.
The higher the meter setting, the darker it is.
White balance removes unrealistic color casts of unnatural light.
The way in which the different parts that make up a photograph or picture are arranged.
There are many different techniques for different types of photography.