The later 1978 AI version of the first wide-angle zoom by Nikon and in fact the first wide angle zoom ever that started at a focal length of 28mm. In it’s time the 28-45 was a real sensation and a technological breakthrough. It was aimed at the professional market and was produced between 1975 and 1978 with a total production of about 20.000 lenses.
This lens is sharp enough even wide open on low-res sensors. Overall image quality is good and performs well on the long or wide end. CA is a non-issue.
You may find it best to stop down to f/8; however, image quality is still good stopped down below f/5,6 compared to modern kit zooms.
Focal length: 28-45mm
Maximum aperture: 1:4.5; Lens construction: 11 elements in 7 groups
Picture angle: 74° (f=28mm) – 50°(f=45mm); Diaphragm: Automatic
Aperture scale: f/4.5~f/22 on both standard and aperture-direct-readout scale
Distance scale: Graduated in meters and feet from 0.6m (2 ft) to infinity (oo)
Focusing: By turning the zooming/focusing ring; Zooming: By back and forth movement of the zooming/focusing ring (reference markings for 28mm, 35mm, 40mm, 45mm on zoom control ring); Weight: 440g
Dimensions: 75mm dia. x 91mm long (overall); 79mm extension from flange
Attachment size: 72mm (P = 0.75)