The Four Camera Modes
Most cameras nowadays offer you the option of several shooting
modes, typically:
Program Mode
The camera does everything for you and decides what is your best
shot. It sets the shutter speed and aperture automatically so all we
have to do is point, focus, and shoot. I never use this mode unless I
am at a family gathering or party where all I want are snapshots.
This mode makes too many decisions for me.
Shutter Priority Mode
You set the shutter to what you need and the camera does the rest.
For example, in sports events, you need a high (fast) shutter speed
to capture the action, while in still life photography you can use a
much lower shutter speed.