A non-Ai version of this lens was made between 1974-1977.
I have here tested the Ai version which have the same optics as the older and it was made between 1977-1981.
Was replaced by the Ai-s version which has improved optics and is still being made today.

Specs:

Focal length: 28mm	Weight: 240g
Optical design: 7 elements in 7 groups	Mount: Nikon F-mount (ai)
Aperture: f/2.8 to f/22 7 bladed aperure	Covers: Standard 35mm film size (24×36 mm negative)
Closest Focus: About 0.3m (1ft)	Filter Size: 52mm (non-rotating)

Image quality


Build quality

Like most NIKKOR lenses this is very well made.
All metal and are very well put together so it's solid as a rock.


Conclusion

Lovely lens at more or less all points.

Image quality wide open is nice and sharp and fairly well corrected for a flat focal plane.
So no that much corner softness at infinity.
Stop it down a little and it goes from good to great and can give some very nice quality images.
Bokeh looks also nice and it handles flare and backlight well.

Nikkor lenses rarely disappoints and this is no exception.


Thumbs up:
Image quality
Bokeh, flare and backlight
Build quality and feel

Thumbs down:

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Technical Info

Analogue
Camera: Nikon FE2
Scanner: Plustek OpticFilm 7600i
Film: AGFA CINEREX (X-ray film)
Developer: Kodak Xtol

Digital
Canon 500D with lens mount adapter