The European press event for the Olympus OM-D E-M5 gave us a chance to get some proper shooting time in with one of the most discussed cameras of 2012. Our previously-published preview already looks over the features and custom options but this trip gave us a chance to really use the camera. Andy Westlake hit the streets of Amsterdam with an E-M5, determined to find out how its features work in real-world use and looks at how well the Art Filters and processing options work.