The SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Aviation Photography » Sigma 100400 blog photos Koepnick_0010
Don’t forget the people watching the air show make interesting photos. Sigma 100-400mm Contemporary lens on a Canon 1DX. ISO 500; f7.1 @ 1/2500th second. © Jim Koepnick | 2017