Why it matters.

It can help when handholding, especially with a stationary subject.

A closer look.

Camera or lens systems counter movement, with available modes depending on the equipment. Some modes account for deliberate panning.

Picture this

Compare supported and handheld captures, checking your manual for the appropriate stabilisation mode.

Keep in mind.

It does not freeze a moving subject. Tripod behaviour and recommended settings vary by camera and lens.