Photos of the falcon and great horned owl are straight of the camera jpeg. The others were a bit cooked on lightroom (cropped and some adjustments).
This lens weight less than one kilogram and I shoot handheld. I choose this lens because a good lens stays a good lens : it is free of distorsion but can bring some CA in weird lighting, especially on distant white small objects under strong light (nothing insuppressible).
It can do the job that for sure. Results depends on me and I try to improve my focus technique. Sometimes, I miss some shots because my eye is distracted by red dots in the EVF when the switch is on MF.
I can shoot to 2.5meter to infinity, but the closer I am better result I get.
I also own a TC-14B converter, which gives me a 420mm lens. I feel uncomfortable with it, because images are less sharper. With no tripod and stabilisation it is too shaky and frustrating at the end of the day.
I am thinking about adding some grip on the camera because of this lens. For now, I imagine taking a J.B. camera designs wood grip.