nikon 500 pf

So, despite the sceptic in me being doubtful about the autofocus speed (essential with bird flight shots) I invested in a Nikon 500mm f/5. mobil sedan 500 jutaan 6E PF. vit c tablet 500 mg A featherweight by comparison with the 300mm I have used it in combination with the D850 and its boosted battery power option