Panasonic Lumix DMC-G5 review
The focusing that is offered in the Panasonic Lumix DMC-G5 is a long way from the early days of contrast-detection systems. In good light, it performs as well if not better than entry-level DSLR cameras. Its remaining weakness appears to be tracking subjects in low light, as it often fails to lock on in low-light situations. This is an area where the higher-level phase-detection systems on DSLR cameras still have the edge. Although hybrid systems promise an answer to this, none to date has managed to keep up with the speed of the Panasonic or Olympus contrast-detection systems.
There is a wide array of focus options in the G5 to control how the AF performs, from continuous and flexible focus options to allow the camera to focus before half-pressing the shutter button, through to touch focus and face-detection options. It can be difficult to identify what each control actually does at first, and they are spread across the menu system. A dedicated focus menu would be handy here, along with descriptions as to the function of each control when selected.