09-15-2014, 01:40 PM
Yeah, that looks like an awesome lens. For an unreachable price. It gained a little weight compared to the 1st iteration:
2.1 kg vs. 1.9 kg for the old 400mm f4 DO. Must be a heavy extra element (17 elements in 13 groups for the old lens, 18 elements in 12 groups for the new design). No lens construction diagram for the new version available yet.
2.1 kg vs. 1.9 kg for the old 400mm f4 DO. Must be a heavy extra element (17 elements in 13 groups for the old lens, 18 elements in 12 groups for the new design). No lens construction diagram for the new version available yet.