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Nikon 20mm f/4 Ai : Specifications and Opinions

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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 list price, when it was announced (1974) 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

What do you think about this lens?

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The following opinions have been automatically translated with Google Translate.

Aval

sent on April 01, 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 December 02, 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 September 17, 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 December 02, 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

1niko

sent on November 03, 2013

Pros: The 20mm F4, and a lens of excellent quality, has made uniform between the center and the edges, especially on common diaphragms, F5, F11 to 6, with no peaks but very homogeneous, which for a wide-angle and 'important. Another strength of the F4, and 'step standard Nikon 52mm filters, so weight and size, are very low, like a 50mm. Price, as lens quality, accessible.

Cons: The lens hood giant, has pushed a contrast, and vignetting contained on film, but because of the architecture of the digital sensors a little 'vignette, especially on FF, but then easily correctable. Of course not 'a AF, but in my opinion, the wide angle is not' so important.

Opinion: The lens was put into production in 1974, and remained on the market for only four years, two years and two F bayonet type AI, many specimens (like mine) are modified for the new F AI cameras, outputs in those years. This lens begins a new course of the history of Nikon optics has on his shoulders the legacy of the famous "frying pan" 20mm F3, 5, legendary at the time, but now buyers require more modern lenses and read, but quality, and two do not go hand in hand. Pero '20mm F4 still has a very good quality, as I said before, his strength and' uniformity in yield between the center and edges, especially the common working diaphragms, F5, F11 to 6, with no peaks, but very homogeneous, which in my opinion on a wide angle and 'important. In fact, after this F4, F3 un'altro20mm doors, 5, but it was not appreciated by the yield mediocre at the edges, but then every era has its own way of thinking about surrender. I used this lens with the FM2 and also with F100, and the result was really excellent, now use the D700, I've got to try it well, but that pocor that I used, I was satisfied. Today with digital, many prefer optical contrast, keep in mind, that at the time the contrast was used to mask the flaws, a lack of clarity, in fact if you feel the optics are all Russian contrast, the optical Leitz old school, year high risolvenza and contrast medium (but very microcontrast = separation of tonality, what goals can only be reached with a few lenses but with high transmittance). All the best, Nicholas

Photos taken with Nikon 20mm f/4 Ai

Adda

by 1niko
61 comments, 6517 views

Adda

by 1niko
47 comments, 5097 views

Even the boats are sleeping

by 1niko
86 comments, 5695 views

The colors of Manarola

by Aiacos
20 comments, 2954 views

HI RES 6.0 MP

Fano

by 1niko
37 comments, 3329 views

HI RES 12.1 MP

The Grande Carpenter

by Sigismondi
22 comments, 2366 views

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Together towards the sun

by Testarossa57
27 comments, 1404 views

Fano

by 1niko
12 comments, 2130 views

HI RES 12.1 MP

Massaciuccoli

by Aiacos
13 comments, 1662 views

HI RES 24.1 MP

Sixth Inf. Corniglio

by 1niko
13 comments, 2399 views

Torrechiara Castle Pr

by 1niko
23 comments, 1624 views

Sixth Inf. Corniglio

by 1niko
6 comments, 1247 views

Untitled Photo

by 1niko
6 comments, 1594 views

HI RES 12.1 MP

Santa Maria Assunta Pr

by 1niko
4 comments, 1708 views

The Great carpenter overall view

by Sigismondi
5 comments, 1241 views

Sunset HDR

by Eemac73
2 comments, 1631 views

HI RES 16.8 MP

Untitled Photo

by 1niko
14 comments, 1396 views

Sixth Inf. Corniglio

by 1niko
19 comments, 1343 views

Church of San Rocco

by 1niko
4 comments, 1153 views

Embossed footprints

by Testarossa57
21 comments, 1078 views

Rifugio Galassi (... under the flag of stars...)

by Giannijazz
12 comments, 411 views

HI RES 19.0 MP

Sixth Inf. Corniglio

by 1niko
7 comments, 1266 views

Castelluccio di Norcia-Flowering

by Giovanni.folli
7 comments, 1570 views

HI RES 34.8 MP

HDR Panorama

by Eemac73
0 comments, 1809 views

Sunset on the river

by Albachiara68
7 comments, 1403 views

Playa de Arnia

by Amateur
2 comments, 1019 views

Takeoff

by Gsabbio
0 comments, 1397 views

HI RES 5.0 MP

The winter does not want us to leave

by Albachiara68
2 comments, 1221 views

A Drone controls

by Albachiara68
6 comments, 1360 views

Sunrise from the train window

by Testarossa57
5 comments, 746 views

HI RES 5.7 MP

Hills painted oregon

by Vinicio Triglia
1 comments, 1101 views

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Following the sun

by Albachiara68
5 comments, 1267 views

HI RES 12.2 MP

Cansiglio Forest

by Giannijazz
0 comments, 950 views

HI RES 6.0 MP

Oggiono

by Eemac73
0 comments, 836 views

Lainate center ...

by Eemac73
0 comments, 953 views

Waiting for the rising

by Marco.ferrario3
1 comments, 460 views

HI RES 7.4 MP

Dumbledore

by Amateur
3 comments, 864 views

HI RES 24.0 MP

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Reviews » Lenses » Lenses Nikon » Nikon 20mm f/4 Ai

Nikon 20mm f/4 Ai : Specifications and Opinions

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Photos taken with Nikon 20mm f/4 Ai