DSLR (Digital Single Lens Reflex) Cameras
Cameras that give you full control, as oppose to point-and-shoot. Three main parts: shutter speed (how fast the shutter closesa and re-opens), ISO (how sensative the sensor is to light), and aperture (how big the opening in lense is). You must master all these three to start taking good photos. You will have to make trade-offs between them.