The beauty of having a smaller camera with a smaller sensor is the ability to use virtually any lens on it. There is a range of cheap CCTV lenses that work well on micro 4/3 cameras. One of my favorite ones is fujian 35mm/1.7. It is far from perfect but that makes it more fun to use. My one doesn’t even focus at the infinity. But it is tiny and it is easy to find space for it in my bag. And it costs close to nothing :-)
