The brochure for the upcoming Tamron 20-40mm f//2.8 Di III VXD lens leaked online (see previous lens coverage): Lens construction: 12 elements in 11 groups Minimum shooting distance: Wide 0.17m, Tele 0.29m Maximum magnification: Wide 1: 3.8, Tele 1: 5.1 Filter diameter: 67 mm Maximum diameter: 74.4 mm Overall Length: 86.5 mm Weight: 365 g … Continue reading Tamron 20-40mm f/2.8 Di III VXD lens brochure leaked online