Tamron 20-40mm f/2.8 DI III Specs
Focal Length 20 to 40mm
Focus Type Autofocus
Image Stabilization No
Filter Size 67 mm (Front)
Weight 12.9 oz / 365 g
Sony FE 16-35mm f/2.8 GM Specs.
Focal Length 16 to 35mm
Dimensions (ø x L) 3.5 x 4.8" / 88.5 x 121.6 mm
Length at Maximum Extension 5.4" / 136.2 mm
Weight 1.5 lb / 680 g