This is the Canon EOS 1100D
This is a close up of the Command Dial and Command Wheel
This is the Command Dial
M- Is manual, This means the user controls the shutter speed and aperture.
Av- Is Aperture Priority, This means the user is in control of the aperture and the camera will automatically alter the shutter speed.
Tv- Is Shutter Speed Priority, This means the user is now in control of the shutter speed, so the camera will then automatically set the rest of the settings.
This is the Command Wheel
This is used to alter Aperture and Shutter Speed
The Av button on the back of the camera allows you too change between the Aperture and Shutter Speed.
The top right hand button on the camera (auto focus selector) allows you to manually select the focus point.
The ISO button on the back of the camera lets you change the light sensitivity.