Hi everyone, I am about to swap my Canon system for an Olympus system. I was using a Canon 7D mark 11, a Canon 70D, Canon 100mm f2.8L IS macro, Canon 100mm - 400mm f4.5/5.6L IS 11 and a Canon 300mm f2.8L IS, Canon 2 x TC 111, Canon Speedlight 600EX Rt and a Mieke ringflash for macro and bird/wildlife. In the next few days I will change that lot for 2 x Olypus OM D EM 1 bodies, a Zuiko 60mm macro a Zuiko 40mm - 150mm f2.8 + 1.4 extender and have on order the Panasonic 100mm - 400mm and the Zuiko 300mm f4. I would be most grateful if anyone out there has any observations on any weaknesses I might encounter with my new system compared to my Canon system. I do shoot a few images of small birds in woodland so will low light be a problem? I tended to use my Speedlight in low light to compensate for the Canon sensors, though the 7D mark 11 isn't too bad. I will probably purchase the Olympus FL600R flash gun, but is there a third party equivalent that anyone can recommend, please? My reason for changing was weight. The Canon system, together with water bladder, weighed in at 8 - 9 Kgs and I walk up to 15 miles - it was getting too much. Thanks a lot.