Key Features
Lens type
Wide-angle Zoom lens
Max Format size
35mm FF
Focal length
17–28 mm
Maximum aperture
F/2.8
Minimum aperture
F/22
Number of diaphragm blades
9 (Circular diaphragm)
Elements
13
Groups
11
Minimum focus
0.19m (7.5') [Wide]
0.26m (10.2')[Tele]
Autofocus
Yes
Motor type
RXD Motor
Focus method
Extending front
Weight
420 g
Diameter
67 mm
Length
99 mm (3.9')
Zoom method
Rotary (extending)