Fig. 8: A seagull is flying over river Aare near the Schachen island at Brugg. It is a test shot with my used bought Nikkor 300mm f/2.8 and Nikon TC-20E II teleconverter. The autofocus catched the wing instead of the head why it is not properly focused. — EXIF: Nikon D3; Δt=1/1000 s; f=600 mm; f/5.6; ISO 220; 2018-04-27 8:31:16
