Panasonic was first to launch a compact system camera all the way back in 2008, so it has a decently rich heritage on which to build its new releases. The Panasonic GM1 starts a new line for the company, bringing the total up to five now. There's G, GF, GX, GH and now GM. The GM1, being the smallest, lightest and cheapest available is primarily aimed at beginner photographers, especially those who might be stepping up from a compact camera.