» Rockwell review


Principal specifications
Lens type Zoom lens
Max Format size 35mm FF
Focal length 28–70 mm
Image stabilization No
Lens mount Nikon F (FX)
Maximum aperture F2.8
Minimum aperture F22
Aperture ring Yes
Number of diaphragm blades 9
Aperture notes rounded blades
Elements 15
Groups 11
Special elements / coatings 2 ED glass elements and 1 molded-glass aspherical lens
Minimum focus 0.70 m (27.56)
Autofocus Yes
Motor type Ultrasonic
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale Yes
Weight 935 g (2.06 lb)
Diameter 89 mm (3.48)
Length 122 mm (4.78)
Materials metal mount
Sealing No
Colour Light Grey or Black
Zoom method Rotary (extending)
Filter thread 77 mm
Hood supplied Yes
Hood product code HB-19
Tripod collar No