Clearly less body volume
2.95x less body volume
Has AF tracking
With AF tracking, once you choose the subject and press the shutter release part way down, as the subject moves, the autofocus will follow it. No more out of focus shots.
Wider aperture at minimum focal length
Wider aperture at minimum focal length. With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
Has a hot shoe
A hot shoe can be used to attach an external flash, as well as light meters, viewfinders, rangefinders and other attachments.