Nikon TC-20E II vs Nikon TC-20E III

The Nikon TC-20E III is Nikon's first new teleconverter since the 1990s. The older TC-20E and TC-20E II are the same thing as each other. This new TC-20E III offers a new optical design, adding an aspherical element, which may offer better performance with some lenses. It is also shorter than the TC-20E and TC-20E II.Dec 10, 2009

The Nikon TC-20E III is a major update to the existing Nikon TC-20E II teleconverter, sporting a brand new optical design with an aspherical element, which delivers better performance with many specialty telephoto lenses.Jul 3, 2020