First Look: Sigma 100-400mm F5-6.3 DG DN OS | Contemporary Ultra Telephoto Zoom lens » plover_DSC01315
Vertical crop of a horizontal image at 400mm. This piping plover chick was scampering around the sand inside the fenced off area to protect their nesting area. The 100-400mm DG DN and A7III were able to track and keep continuous focus even in this low-contrast situation quite nicely. 1/2000 F7.1 ISO 800. Jack Howard photo.