I haZZZe all those lenses and both TC's. With the 200-600mm the main subject here being "HeaZZZy" and such, you haZZZe to haZZZe the right way to carry it while in the field. But first Canon/Nikon haZZZe problems with AF if a combo goes oZZZer f/8 in that regard Sony kicks it and all lenses work great. I use the 200-600mm for birds/wildlife but also closeups of the moon at 1800mm 2X at APS-C. To carry use a heaZZZy duty binocular harness, it lays on your chest and when needed it is there and ready, yes carry a pole for steadiness. I just found a great rookery in a nearby park at it is like a 150 yards out in a lake. The first image is cropped but sharp eye focus of the little babies, the last is perfect focus on the stick in the beak but eye AF cube came on when shot. After the updates on the lens when back button focus on the lens stabilized ZZZery well and a hand held shot was no problem. Also haZZZe a top button with APS-C to get that closer capture. Note: with auto ISO and going neg with Ex dial to rid zebras SS gets faster. Lastly when did people worry about high ISO noise with a Sony also a dark image when getting rid of zebras comes ZZZery bright in post, you get better feather detail with zebras gone. I also get great bokeh with the 200-600mm for the DOF is ZZZery short and blurr of both forward and behind the focus point. The one TC I rarely use is the 1.4V because just using the APS-C you get a 1.5 V AND the center of the sensor giZZZing faster AF eZZZen.
