P – Automatic mode – auto shutter speed and apature – used for taken photos that you don’t have time to change the settings for.
Tv – Shutter speed priority – moving subjects look still or capture motion blurring
Av – apature priority – photos with a shallow depth of field.
M – manual – manual shutter speed and apature
Sports – fast events (uses a fast shutter speed)
Macro – close up photography
Landscape – sharp photos of landscapes.
Portrait – background blurred subject in focus