For the moment, APSC on 600mm gives 900mm and 1200mm with a 1.4TC is quite hard to beat for reach, I only wish they will make an apsc lens instead of making me lug a FF lens.Thanks. It's really nice to finally hear from some one who appreciates M43 after all the bashing of Olympus & M43 above.
Actually, I initially bought the EM5.3 because I found my Sony RX10 IV (24mm - 600mm) too heavy and cumbersome.
I realized that whenever I am not outdoor in the wild, I seldom use the range 200-600mm).
Hence, I got the EM5.3 with 12-100 as my walk around setup and I even bought the pancake kit lens
to use the EM5 like a compact camera
It was only after when I join Olympus Club and join them for the birding classes that I tried out
the 300mm with 2x Tele (equivalent to 1200mm on 35mm) that I got interested in birding.
I never thought it is possible to shoot handheld with 1200mm and walk around easy with such a lens.
In fact, the kit was so light that I was actually carrying a EM1x with 300mm F4 (600mm) and a EM5.3 with
40-150 (80-300). Sadly the EM1x, 300mm and 40-150mm are all on loan and have to be returned after
the birding workshop but it was fun!
When the m43 400mm giving 800mm out of the box is out, it'll give a real run for the money in the sports and wildlife users and that will be decision day for me.