The Sigma 100-400mm F5-6.3 DG DN OS | C has 1:4.1 magnification at 1.6m at 400mm for close-up work. When paired with the new 2.0 Teleconverter, it offers 1:2 magnification at 800mm with full autofocus functionality! Sigma fp and 100-400mm DG DN at 1/1250 f6.3 at ISO 100. Photo by Noriko Yamaguchi