In October 2013 the Panasonic GM1 launched a new line of super-small compact system cameras for Panasonic. It's biggest selling point is that despite its very small size it houses the same 16-million-pixel Four Thirds sensor as is in the excellent Panasonic GX7. It also has the Micro Four Thirds mount so it can accept a wide range of interchangeable lenses.Now Panasonic is expanding the GM line with the addition of the GM5. This uses the same 16-Mp sensor and Venus processing engine as the GM1 (and GX7), but it also has a 1.166,000-dot electronic viewfinder (EVF) to make image composition and review easier in bright light. There's also a hot-shoe to allow external flashguns to be mounted on the camera for extra illumination, and the camera comes bundled with a tiny flash. Both of these features are designed to make the GM5 more attractive to experienced photographers looking for a super-small camera capable of producing high quality images.