Ever since I had my micro four thirds camera systems – the Olympus PEN EP3 and Olympus OMD EP5 – I have not touched my DSLR (Nikon D90). I remember my trip to India, I still lugged the D90 around. It was so heavy, I couldn’t carry anything else. But with the mirror-less systems, I can achieve all the functions of a DSLR without the bulk! In our Shanghai trip, I used the Olympus P