Tamron 17-28mm f/2.8 Di III RXD

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Lens Specifications
Name Tamron 17-28mm f/2.8 Di III RXD (Model A046)
Image Circle APS-C
Type Wide Zoom
Focal Length 17 - 28mm
35mm Equivalent 1.5x: 25.5 - 42mm; 1.6x: 27.2 - 44.8mm
Max Aperture f/2.8
Min Aperture f/22
Diaphragm Blades 9 (circular)
Lens Construction 13 elements in 11 groups, including 2 LD (Low Dispersion), 1 XLD (Extra Low Dispersion) and 3 aspherical elements; BBAR (Broad-Brand Anti-Reflection) coating; Flourine coating
Diagonal Angle of View 104.7 to 76.4 degress
Focus Details Internal via RXD (Rapid eXtra-silent stepping Drive) with DMF (Direct Manual Focus)
Front Element Rotation No
Zoom System Rotary
Closest Focus 19cm / 7.5 in. (Wide), 26cm / 10.2 in. (Tele)
Magnification Ratio 0.19x / 1:5.2 (Wide), 0.17x / 1:6 (Tele)
Filter Size 67mm
Dimensions(Length x Diameter) 3.9 in. x 2.9 in / 99mm x 73mm
Weight 420g / 14.8 oz
Notes Available mounts: Sony FE-mount; Moisture-resisteant construction
Typical Online Price US$899 (Avail. July 2019)