Nikon 20mm f/4 Ai : Specifications and Opinions

Nikon 20mm f/4 Ai

The Nikon 20mm f/4 Ai is a wide-angle lens for FF and APS-C, manufactured from 1974 to 1978 (discontinued). The focus is done by Manual Focus, it does not have image stabilization. The average price was 130 €;

8 users have given it an average vote of 10.0 out of 10.

Specifications
Focal lenght	20 mm
Angle of view	94.5°
Format	FF, APS-C
Max. aperture	f/4
Aperture blades	7
Lenses/Groups	10 elements in 8 groups
Min. focus distance	0.30 meters
Reproduction ratio	0.09x
Features
Stabilization	No
Focus	Manual Focus
Internal Focus	No
Built and notes
Tripod ring	No
Extenders	No
Filters	52 mm
Lens hood	Yes (not supplied)
Weather sealing	No
Weight	210 g
Dimensions	63 x 47 mm
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Reviews

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The following opinions have been automatically translated with Google Translate.

Gsabbio

sent on 13 Maggio 2026

Pros: Gorgeous on film

Cons: Noticeable vignetting

Opinion: Pleasantly compact, very engraved on film, but with a very evident vignetting at full aperture, however it has an excellent rendering on contrast. When I switched from Olympus to Nikon, it was for a few years the -worthy- replacement for the Zuiko 21 f3.5 which... For those who know the beauty of Zuiko (even on digital), this is really a compliment. I don't know how it behaves on digital, but on film it was really a jewel.

Aval

sent on 01 Aprile 2022

Pros: Excellent quality and compactness, fits comfortably in your pocket. It is a relatively "easy" goal, because it is little affected by the typical problems of pushed wide angles. After 46 years it looks like a bit new!

Cons: Nothing.

Opinion: I have owned this lens since 1976 (including its beautiful removable metal hood). He gave me great satisfaction photographing on film. When I went digital, initially with the APS-C format, I stopped using it. I took it back about two years ago, as I abandoned the APS-C for the FF. It gave me excellent results, both with the Nikon df and with the D800. Given the great depth of field, the lack of AF is not a handicap. It is a great complement to the 24-120 f4 because, with little bulk it is little weight, it allows you to push a little more on the wide angle. In certain situations, such as when the sun or other strong light sources enter the frame, I prefer it to AF D 14 2.8 because it provides images almost immune to ghosts and flares.

Giulio Orlando

sent on 02 Dicembre 2021

Pros: Lightness, compactness, sharpness

Cons: Nothing, except the unobtainable hood

Opinion: It's a small tank. For those who shoot in analog is a sword, on digital gives excellent results with a vintage look; obviously you can not ask for the same performance as a 20mm Z or Af-S. The Nikon HN-14 dedicated hood is nowhere to be found, but since it resists the flare very well, you can also do without it.

Giovanni.folli

sent on 17 Settembre 2018

Pros: Lightweight, compact, sharpness that does not fear comparisons with modern lenses

Cons: So small that sometimes I don't see it and I forget it at home

Opinion: Mounted on a modern FF, and maybe with the battery grip, it looks like a boil in an elephant's face! But what a blade! What I have is an AI of 1977 bought for two lire along with other lenses and an old SLR and I always carry it behind. If, like me, you have the good fortune to find him in some used market, do not let him escape! Below is a picture of me made to the flowering of Castelluccio made with this little gem-in fact it is an HDR, so not entirely truthful about the actual performance, but an idea you can do..

Gian Carlo F

sent on 02 Dicembre 2017

Pros: extremely compact and light, clear at the most closed diaphragms, absence of distortion

Cons: nothing special, maybe f4 could be sharper, but in short .....

Opinion: I have since 1976 and I use it even now with D800.rnOttica really tiny but very "powerful", produces beautiful images sharp and well contrasted, especially if you can close a bit ', also f22 without holding apparently diffrazione.rnGood resistance against the light, even if some beautiful Christmas tree produces it.rnThe fact of going unnoticed is a dote formidabilern

There are 1 more reviews. Show all »

Photos taken with Nikon 20mm f/4 Ai

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7 comments, 1376 views

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0 comments, 1961 views

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0 comments, 1081 views

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Oggiono

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0 comments, 958 views

Lainate center ...

by Eemac73
0 comments, 1076 views

Waiting for the rising

by Marco.ferrario3
1 comments, 552 views

Dumbledore

by Amateur
3 comments, 962 views

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Nikon 20mm f/4 Ai : Specifications and Opinions

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Photos taken with Nikon 20mm f/4 Ai