You asked
Panasonic lumix gm5 vs olympus om d e m10?
Both are 16-megapixel Micro Four Thirds cameras from 2014, and both take the same wide range of lenses, so the choice comes down to how you shoot.
Pick the Olympus OM-D E-M10 if you shoot handheld in dim light or at slow shutter speeds. It has three-axis stabilisation built into the body. The Panasonic Lumix GM5 has none, so you'd need stabilised lenses to keep things sharp.
Pick the GM5 if you want one of the smallest interchangeable-lens cameras with a viewfinder, and you're happy to rely on stabilised glass. Either way, the Olympus M.Zuiko 25mm f/1.8 is a small, sensible first lens, framing like a 50mm.
Written by Claude from this site's pages.