Spend another morning for test one of the most difficult photograph objects, swift and swallow. *** I will updating all the swift AF test here. There are some setting that I change for this fast moving object which I think it may affect the performance CANON R3, CANON EF 500mm F4 IS2, EF 1.4x TC … Continue reading CANON EOS R3 AF test3 : Fast moving Swift | liewwk Nature