Nikon 20mm f/1.8

Full-Frame Z Mirrorless Ultrawide

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Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

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Nikon Z 20mm f/1.8

Nikon NIKKOR Z 20mm f/1.8 S (77mm filters, 17.7 oz./503g, 0.66'/8"/0.2m close focus, $947 new or about $750 used if you know How to Win at eBay). bigger. I got mine at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay.

This 100% all-content, junk-free website's biggest source of support is when you use those or any of these links to my personally approved sources I've used myself for way over 100 combined years when you get anything, regardless of the country in which you live. Nikon does not seal its boxes in any way, so never buy at retail or any other source not on my personally approved list since you'll have no way of knowing if you're missing accessories, getting a defective, damaged, returned, non-USA, store demo or used lens — and all of my personally approved sources allow for 100% cash-back returns for at least 30 days if you don't love your new lens. I've used many of these stores since the 1970s because I can try it in my own hands and return it if I don't love it, and because they ship from secure remote warehouses where no one gets to touch your new lens before you do. Buy only from the approved sources I've used myself for decades for the best prices, service, return policies and selection.

 

December 2022   Nikon   Mirrorless   Mirrorless Lenses   All Nikon Lenses   Nikon Flash   All Reviews

Sony vs. Nikon vs. Canon Full-Frame

How to Use Ultrawide Lenses

Nikon Z Ultrawides Compared

Why Fixed Lenses Take Better Pictures

 

Sample Image       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide   Recommendations

More samples at Bokeh, Macro and Spherochromatism.

These are just snapshots; my real work is in my Gallery.

This is shot as a JPG; no RAW files were used or needed.

Nikon Z 20mm f1.8 sample image file

Seven Palms Oasis, 7:22 PM, 30 September 2020. Nikon Z7, Nikon Z 20mm f/1.8 wide-open at f/1.8 for 25 seconds at ISO 64 (LV -2.3), Perfectly Clear. bigger, full resolution or camera-original © JPG file.

Only some of the palms are in perfect focus at f/1.8. The close stonework and the distant parts are out of focus.

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Introduction       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

New   Good   Bad   Missing

Adorama Pays Top Dollar for Used Gear

Amazon

B&H Photo - Video - Pro Audio

Crutchfield

I buy only from these approved sources. I can't vouch for ads below.

This Z 20mm f/1.8 is an extremely useful lens for low-light ultrawide action, news, sports and astronomical shooting.

This is a mirrorless version of my great 20mm f/1.8G I've loved so much since it came out in 2014 for my DSLRs.

Neither Canon nor Fujifilm have anything like this. 20mm is the ideal ultrawide focal length, worlds better than 24mm.

A 20/1.8 is one of my favorite lenses. It's ideal for Milky Way, low-light city shots and close-in action and motion in low light.

Just turn the focus ring at any time for instant manual-focus override.

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

 

New

blue ball icon © KenRockwell.com Biggest, heaviest and most expensive 20mm lens ever made by Nikon.

blue ball icon © KenRockwell.com Multi-group internal focussing.

blue ball icon © KenRockwell.com Nikon's first fixed 20mm lens for its mirrorless Z system.

 

Good

green ball icon © KenRockwell.com Very good optics.

green ball icon © KenRockwell.com Easily takes at least four stacked 77mm filters with no vignetting on full frame.

green ball icon © KenRockwell.com Fast.

green ball icon © KenRockwell.com Instant manual-focus override.

 

Bad

red ball icon © KenRockwell.com Offshored to China; not made domestically in Japan.

red ball icon © KenRockwell.com Big and expensive.

 

Missing

gray ball icon © KenRockwell.com Only stops down to f/16, not f/22.

gray ball icon © KenRockwell.com No Image Stabilization. Even if your camera does this internally it can't stabilize the corners of an ultrawide as well as the center of the image.

gray ball icon © KenRockwell.com No aperture ring.

gray ball icon © KenRockwell.com No VR switch to control in-camera stabilization.

 

Nikon Z 20mm f/1.8

Nikon NIKKOR Z 20mm f/1.8 S. bigger.

 

Format       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

This is a full frame FX lens, and I'm reviewing it as such.

It works great on DX mirrorless cameras, on which you may make the usual inferences.

 

Compatibility       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

This lens works only on Nikon's Z-series mirrorless cameras.

It does not so much as even mount on any other camera.

 

Specifications       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

 

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

 

Name       specifications      

Nikon calls this the NIKKOR Z 20mm f/1.8 S:

    NIKKOR: Nikon's brand name for all their lenses.

    Z: For Nikon's mirrorless cameras.

    S: Subliminally suggests sexual satisfaction. The "S" designation has no other purpose than subliminal seduction; Nikon and electronics and automobile and every kind of marketer have been using letters like "S" and "X" in model numbers since the 1940s for this same reason. Nikon called their first 1946 rangefinder lens mount the "S" mount, then went whole-hog to the "F" SLR mount in 1959, used "S" again when they updated their AI lenses to AI-"S" in 1983, created AF-"S" SWM lenses in 1998 and here it is again.

 

Also has:

    AF-P: Stepper (Pulse) autofocus motor: silent for movies.

    Aspherical: Specially curved glass elements for sharper pictures.

    D: Couples distance information to the 3D Matrix Meter.

    E: Electronic diaphragm for silent operation.

    ED: Magic Extra-low Dispersion glass for reduced secondary chromatic aberration.

    G: Gelded; has no aperture ring.

    IF: Internal focusing; nothing moves externally as focused.

    Nano Crystal Coat (N): Magic anti-reflection coating that has a variable index of refraction that's far more effective against ghosts and internal reflections than traditional multicoating.

    ∅77: 77mm filter thread.

 

Optics       specifications       top

Nikon Z 20mm f/1.8 internal optical construction

Nikon Z 20mm f/1.8 internal optical construction. Aspherical and ED elements.

14 elements in 11 groups.

3 ED extra-low dispersion elements, which help reduce secondary axial chromatic aberration.

3 aspherical elements.

Internal multi-group focussing system.

Nikon Super Integrated multicoating (SIC).

Nano Crystal Coating for even fewer ghosts and flare.

 

Filters       specifications       top

77 mm filter thread.

 

Diaphragm       specifications       top

Nikon Z 20mm f/1.8

Nikon NIKKOR Z 20mm f/1.8 S. bigger.

9 rounded blades.

Electronically actuated.

Stops down to f/16.

 

Focal Length       specifications       top

20mm.

When used on an APS-C camera, it sees the same angle of view as a 30 mm lens sees when used on a full-frame or 35mm camera.

See also Crop Factor.

 

Angle of View       specifications       top

94º diagonal on FX.

70º diagonal on DX.

 

Autofocus       specifications       top

Multi-group internal focussing.

No external movement as focussed, so no air or dust is sucked in.

 

Focus Scale       specifications       top

Not on lens, but may be displayed in-camera.

 

Infinity Focus Stop       specifications       top

No.

 

Depth of Field Scale       specifications       top

Not on lens, but may be displayed in-camera.

 

Infrared Focus Index       specifications       top

No.

 

Close Focus       specifications       top

0.66 feet (8" or 0.2 meters) from the image plane; which means just inches away from the front of the lens!

 

Maximum Reproduction Ratio       specifications       top

1:5.3 (0.19 ×).

 

Reproduction Ratio Scale       specifications       top

No.

 

Image Stabilizer       specifications       top

NONE.

 

Caps       specifications       top

LC-77B front cap and LF-N1 Z-mount rear cap, included.

 

Hood       specifications       top

Nikon HB-95 Hood

HB-95 Hood. bigger.

HB-95 plastic bayonet hood, included.

 

"Case"       specifications       top

Nikon CL-C2 Lens Case

Nikon CL-C1 Lens "Case". bigger.

Nikon claims it includes a case, but it's only a CL-C1 cloth bag.

A tube sock works better.

I love my Think Tank Retrospective bags for carrying this lens with my Z system: the Z 24-200mm, this lens and my SB-400 flash.

 

Size       specifications       top

3.4" ø maximum diameter × 4.3" extension from flange.

84.5 mm ø maximum diameter × 108.5 mm extension from flange.

 

Weight       specifications       top

17.745 oz. (503.0 g) actual measured weight.

Rated 17.9 oz. (505 g).

 

Announced       specifications       top

11PM, Tuesday, 11 February 2020, NYC time.

 

Promised for       specifications       top

March 2020.

 

Included       specifications       top

LC-77B front cap.

LF-N1 Z-mount rear cap.

HB-95 hood.

CL-C1 lens sack.

 

Nikon's Model Number       specifications       top

20093.

 

Price, U. S. A.       specifications       top

December 2022

$947 at Adorama, at Amazon, at B&H or at Crutchfield.

About $750 used if you know How to Win at eBay.

 

July 2021

$1,047 at Adorama, at Amazon, at B&H or at Crutchfield.

About $850 used if you know How to Win at eBay.

 

October 2020

$1,047 at Adorama, at Amazon, at B&H or at Crutchfield.

About $900 used if you know How to Win at eBay.

 

February ~ September 2020.

$1,047 at Adorama, at Amazon, at B&H or at Crutchfield.

 

Getting a Legal USA Version       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

This section applies in the USA only.

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

In the USA, be sure your box contains a card printed "4 YEARS USA EXTENDED SERVICE COVERAGE" and that the serial number on the card matches the one on your lens exactly.

If not, you got ripped off with a gray market version from another country. (The serial number on the box doesn't have to match, but if it doesn't it means you bought from a shady dealer who took lenses out of boxes and then resold them as new.) This is why I never buy anyplace other than from my personally approved sources. You just can't take the chance of buying elsewhere, especially at any retail store, because non-USA versions have no warranty in the USA, and you won't even be able to get firmware or service for it — even if you're willing to pay out-of-pocket for it when you need it!

Nikon USA enforces its trademarks strictly. It's unlikely, but possible that US customs won't let your camera back in the country if you bought a gray-market version in the USA, carried it overseas, and try to bring it back in. (If you take the chance of buying one overseas, be sure you have a receipt to prove you bought it overseas and be prepared to pay duty on it.)

If a gray market version saves you $500 it may be worth it, but for $300 or less I wouldn't risk having no warranty or support.

Always be sure to check your box while you can still return it, or just don't buy from unapproved sources or at retail so you'll be able to have your camera serviced and get free updated firmware as needed.

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

Get yours from the same places I do and you won't have a problem, but if you take the risk of getting yours elsewhere, be sure to check everything while you still can return it. Never buy at retail because the boxes are unsealed and it's an almost certainty that a lens as exotic and desirable as this will have been taken out on a few weekend "test shoots" by the salesmen before being sold to you. Never buy retail, unless you want to pay full price for a lens dropped - and returned - by others.

 

Performance       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

 

Overall   Autofocus   Manual Focus   Breathing

Bokeh   Distortion   Ergonomics   Falloff

Filters   Flare & Ghosts   Lateral Color Fringes

Lens Corrections   Macro   Mechanics

Sharpness   Spherochromatism

Stabilization   Sunstars

 

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

 

Overall       performance       top

The Z 20/1.8 is a fast f/1.8 for astronomy and low-light action, but also the biggest, heaviest and most expensive 20mm lens ever made by Nikon.

 

Autofocus       performance       top

Autofocus speed is only moderate, but this is also a factor of my Nikon Z7, which wins no prizes for autofocus.

 

Manual Focus       performance       top

Manual focus is great; just grab the big focus ring at any time.

Manual focusing is entirely electronic; the manual focus ring isn't connected to anything other than a digital encoder.

 

Focus Breathing       performance       top

Focus breathing is the image changing size as focused in and out. It's important to cinematographers that the image not breathe because it looks funny if the image changes size as focus gets pulled back and forth between actors. If the lens does this, the image "breathes" by growing and contracting slightly as the dialog goes back and forth.

The image from this Z 20 1.8 shrinks as focussed more closely.

 

Bokeh       performance       top

Bokeh, the feel, character or quality of out-of-focus areas as opposed to how far out of focus they are, isn't very important because things never get that far out of focus with ultrawide lenses like this. If you look hard enough, the bokeh is neutral: blur circles are just circles.

Here's a shot from headshot distance wide-open:

Nikon Z 20mm f/1.8 Bokeh

Made-in-U. S. A. Davis 6250 weather station, 25 September 2020. Nikon Z7, Nikon Z 20mm f/1.8 wide-open at f/1.8 at 1/4,000 at ISO 64 with +0.7 stops exposure compensation (LV 14.3). bigger or camera-original © file.

As always, if you want to throw the background as far out of focus as possible, shoot at f/1.8 and get as close as you can.

 

Distortion       performance       top

The Nikon Z 20mm f/1.8 has only minor barrel distortion that probably won't be visible as shot on Nikon's Z cameras, even after their automatic correction. No, I have no idea why my Z7 doesn't correct it fully.

Sadly, one still needs to use a correction factor of +1.00 in Photoshop's lens correction filter for JPG images shot with Distortion correction ON for critical scientific use. For normal use, you won't see it.

If you go out of your way to turn off the automatic correction and go looking for it, you'll need a correction factor of +4.00 in Photoshop's lens correction filter for JPG images.

Beware: if you shoot raw and then open these files with non-Nikon software, it's very likely that you will have no distortion correction and will see distortion. I haven't tried; I don't shoot raw.

 

Ergonomics       performance       top

Nikon Z 20mm f/1.8

Nikon Z 20mm f/1.8

Nikon NIKKOR Z 20mm f/1.8 S. bigger.
Nikon NIKKOR Z 20mm f/1.8 S. bigger.

There are no secrets here; half the lens is the big metal focus ring and there's but one AF/MF slide switch, and that's it.

By default the focus ring is always active for instant override. It's entirely electronic; it's not connected to anything mechanically.

You can program the ring to other things than focus if you prefer.

 

Falloff       performance       top

Falloff on full-frame is invisible, although if you look hard you might see a little bit wide-open at f/1.8.

I've greatly exaggerated the falloff by shooting a gray field and placing these on a gray background; it will not look this bad in actual photos of real things:

 

Z 20/1.8 falloff on full-frame at infinity, Vignette control NORMAL.

f/1.8
f/2
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
f/2.8
f/4

© 2020 KenRockwell.com. All rights reserved.

Of course if you're silly enough to turn off Vignette control and then go looking for it, you'll see a bit more:

 

Z 20/1.8 falloff on full-frame at infinity, Vignette control OFF.

f/1.8
f/2
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
Nikon Z 20mm f/1.8 falloff
f/2.8
f/4

© 2020 KenRockwell.com. All rights reserved.

 

Filters, use with       performance       top

There's no need for thin filters. I can stack at least four regular 77mm filters without vignetting at any distance or aperture. I say "at least" because I only had four filters handy when I tried this; I might be able to use more.

This is excellent.

Go ahead and use your standard rotating polarizer and grad filters.

Don't use polarizers on ultrawide lenses; the sky's natural polarization will appear as a dark band in the sky.

 

Flare & Ghosts       performance       top

There aren't any ghosts or flare worth worrying about.

See examples at Sunstars.

 

Lateral Color Fringes       performance       top

Nikon Z cameras all correct for this automatically, and this correction can't be turned off, so there are no fringes shot as JPG.

If you shoot raw and then create images from this raw data using other than Nikon software, it's entirely probable that your particular software won't correct for this, and you could then see color fringes.

There is spherochromatism, which is a completely different aberration in a different dimension than lateral color. In English, this means that there can be color fringes at large apertures in sections of the image that aren't in perfect focus, and with a little bit of field curvature you could be seeing some bluish fringes in the corners at f/1.8 if the field of best focus has pushed itself out past infinity.

 

Lens Corrections       performance       top

Nikon's Z cameras always correct for lateral color fringes (chromatic aberration). This has been part of Nikon's secret sauce since 2007 and never appears in any menu.

Other cameras may be slightly different, but the Z6 and Z7 correct for distortion, diffraction and falloff.

Distortion, diffraction and falloff correction are all ON by default.

You may turn diffraction and distortion correction ON or OFF.

You may set falloff ("Vignette control") correction to OFF, LOW, NORMAL (default), or HIGH.

 

Macro Performance       performance       top

Close focus gets really close; so close that it's hard not to block the light! Here's how close you can get on full frame. The shadow in the lower right is the lens, and I had to work a while to find an alignment that got light on the watch without casting a shadow on the watch:

 

At f/1.8

Nikon Z 20mm f/1.8 Macro Performance

Casio G-Shock Solar Atomic Watch at close-focus distance at f/1.8, 25 September 2020. Z7 at 1/4,000 at ISO 64. bigger or camera-original © file.

It's super sharp, but spherochromatism is putting color fringes on anything even slightly out of focus, which at this distance is just about everything:

Nikon Z 20mm f/1.8 Macro Performance

1,200 × 900 pixel (6.8× magnification) crop from above. bigger or camera-original © file.

If this 1,200 × 900 pixel crop is about 3" (7.5cm) wide on your screen, the complete image would print at a large 14 × 21″ (35 × 55 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 6" (15cm) wide on your screen, the complete image would print at a huge 27½ × 41¼″ (70 × 105 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 12" (30cm) wide on your screen, the complete image would print at a mammoth 55 × 82½″ (1.4 × 2.1 meters) at this same extremely high magnification!

 

At f/8

Nikon Z 20mm f/1.8 Macro Performance

Casio G-Shock Solar Atomic Watch at close-focus distance at f/8, 25 September 2020. Z7 at 1/200 at ISO 64. bigger or camera-original © file.

It's super sharp at f/8, which also eliminates the spherochromatism we saw at f/1.8:

Nikon Z 20mm f/1.8 Macro Performance

1,200 × 900 pixel (6.8× magnification) crop from above. bigger or camera-original © file.

If this 1,200 × 900 pixel crop is about 3" (7.5cm) wide on your screen, the complete image would print at a large 14 × 21″ (35 × 55 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 6" (15cm) wide on your screen, the complete image would print at a huge 27½ × 41¼″ (70 × 105 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 12" (30cm) wide on your screen, the complete image would print at a mammoth 55 × 82½″ (1.4 × 2.1 meters) at this same extremely high magnification!

 

Mechanical Quality       performance       top

Nikon Z 20mm f/1.8

Nikon NIKKOR Z 20mm f/1.8 S. bigger.

Let's not kid ourselves: this is an almost all-plastic Chinese-made lens with glass glass, a metal mount and a few trim pieces made of metal to throw off the innocent. It combines the benefits (for Nikon) of a pro-level-price with offshored consumer construction quality. This is not an heirloom-quality lens as Nikon's manual-focus lenses are.

 

Finish

Black plastic.

 

Hood

Plastic bayonet.

 

Front Bumper

None.

 

Filter Threads

Plastic.

 

Hood Bayonet Mount

Plastic.

 

Front Barrel Exterior

Plastic.

Metal.

 

Focus Ring

Thin metal.

 

Slide Switch

Plastic.

 

Rear Barrel Exterior

Plastic, with metal trim around the very back section.

 

Identity

Engraved around front of lens, also engraved on top of barrel.

 

Internals

Seem like all plastic.

 

Dust Gasket at Mount

Yes.

 

Mount

Chromed metal.

 

Serial Number

Laser engraved on bottom of barrel.

 

Date Code

None found.

 

Noises When Shaken

Mild clicking.

 

Made in

Made in China.

 

Sharpness       performance       top

Lens sharpness has nothing to do with picture sharpness; every lens made in the past 100 years is more than sharp enough to make super-sharp pictures if you know what you're doing. The only limitation to picture sharpness is your skill as a photographer. It's the least talented who spend the most time worrying about lens sharpness and blame crummy pictures on their equipment rather than themselves. Skilled photographers make great images with whatever camera is in their hands; I've made some of my best images of all time with an irreparably broken camera! Most pixels are thrown away before you see them, but camera makers don't want you to know that.

If you're not getting ultra-sharp pictures with this, be sure not to shoot at f/11 or smaller where all lenses are softer due to diffraction, always shoot at ISO 100 or below because cameras become softer at ISO 200 and above, be sure everything is in perfect focus, set your camera's sharpening as you want it (I set mine to the maximum) and be sure nothing is moving, either camera or subject. If you want to ensure a soft image with any lens, shoot at f/16 or smaller at ISO 1,600 or above at default sharpening in daylight of subjects at differing distances in the same image.

As you saw at the top, it's super-sharp even wide-open at f/1.8. In actual practice you have to be careful to be sure the corners are in perfect focus if you want them sharp, too. It seems like there could be some field curvature which pushes the plane of best focus out a bit at the far corners on full frame. Look at the full-resolution image.

Of course the corners get sharper stopped down.

Nikon Z 20mm f/1.8 MTF

Nikon's MTF chart at 10 cyc/mm and 30 cyc/mm.

 

Spherochromatism       performance       top

Spherochromatism, also called secondary spherical chromatic aberration or "color bokeh," is an advanced form of spherical and chromatic aberration in a different dimension than lateral chromatic aberration. It happens mostly in fast normal and tele lenses when spherical aberration at the ends of the color spectrum are corrected differently than in the middle of the spectrum. Spherochromatism can cause colored fringes on out-of-focus highlights, usually seen as green fringes on backgrounds and magenta fringes on foregrounds. Spherochromatism is common in fast lenses of moderate focal length when shooting contrasty items at full aperture. It goes away as stopped down.

Oddly for such a wide lens it has fairly strong spherochromatism, but good for us there's so infrequently anything out of focus with such a wide lens I never saw it except in this torture test:

Nikon Z 20mm f/1.8 Spherochromatism

Mondaine A132.30348.11SBB at close-focus distance at f/1.8, 25 September 2020. Z7 at 1/8,000 at ISO 64. bigger or camera-original © file.

 

Nikon Z 20mm f/1.8 Spherochromatism

1,200 × 900 pixel (6.8× magnification) crop from above. bigger or camera-original © file.

If this 1,200 × 900 pixel crop is about 3" (7.5cm) wide on your screen, the complete image would print at a large 14 × 21″ (35 × 55 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 6" (15cm) wide on your screen, the complete image would print at a huge 27½ × 41¼″ (70 × 105 cm) at this same high magnification.

If this 1,200 × 900 pixel crop is about 12" (30cm) wide on your screen, the complete image would print at a mammoth 55 × 82½″ (1.4 × 2.1 meters) at this same extremely high magnification!

 

Image Stabilization       performance       top

This lens has NO Optical Image Stabilization (OIS), IS or VR (Vibration Reduction) — but some of Nikon's cameras have built-in stabilization.

"Percent Perfectly Sharp Shots" are the percentage of frames with 100% perfect tripod-equivalent sharpness I get when I'm shooting hand-held while free-standing with no support or bracing. Hand tremor is a random occurrence, so at marginal speeds some frames will be perfectly sharp while others will be in various stages of blur — all at the same shutter speed. This rates what percentage of shots are perfectly sharp, not how sharp are all the frames:

% Perfectly Sharp Shots, center of image, Z7 with firmware 3.11
1
1/2
1/4
1/8
1/15
1/30
1/60
1/125
1/250
Stabilization ON
0
0
100
100
100
100
100
100
100
Stabilization OFF
0
0
0
5
40
83
100
100
100

In the center of the image as tested here, I see a three-stop real-world improvement. That's great, but beware:

BEWARE: Sensor-shift stabilization can work great with normal lenses and in the very center of ultra-wide lenses, however it cannot stabilize the corners of ultrawides because the projection of these lenses would require the sensor to more in the corners than in the center. With a 20mm lens, the corners would have to move 47% more (1/cosine(94º angle of view/2)) than the center, which clearly isn't going to happen unless you have a rubber sensor.

In English, this means while I get three real stops of improvement in the center, the correction becomes less effective as you approach the corners. I documented this with Sony's unstabilized 12-24mm f/2.8: while the center stays sharp, the corners may suffer from camera shake.

 

Sunstars       performance       top

With a 9-bladed rounded diaphragm, I get pretty good 18-pointed sunstars on brilliant points of light at the smaller apertures.

Ignore the the vertical smear at large apertures, this is is a sensor artifact called interline transfer smear; it's not a lens defect.

Likewise ignore the crazy rainbow effects at small apertures; these are different sensor artifacts caused by taking a picture directly of the sun and exposing for the dark underside of the palm tree.

Click any to enlarge:

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Nikon Z 20mm f/1.8 Sunstars

Click any to enlarge.

 

User's Guide       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

 

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

 

Nikon Z 20mm f/1.8

Nikon Z 20mm f/1.8. bigger.

A - M Switch

A: Auto Focus. You have instant manual focus override by turning the focus ring at any time. It will try to ignore minor accidental bumps.

M: Manual Focus only.

 

VR Switch

Nikon deleted the VR switch to control in-camera stabilization.

To set this you now have to go into your camera's menu system.

I put this item in my My Menu menu.

 

Recommendations       top

Sample Image   Intro   Format

Compatibility   Specifications   Legal USA Version

Performance   User's Guide  

Compared   Recommendations

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

I love 20mm lenses. I love fast 20mm lenses, and this is a great choice for Nikon Z for low light. This is a Milky Way and low-light action star!

If you don't need to shoot at f/1.8, then the Z 14-30mm f/4 is a more useful lens because it zooms both wider and closer.

If you shoot both DLSR and mirrorless Z systems you might prefer the 20mm f/1.8G because it can work on both systems. I love my AF-S 20mm f/1.8G for my SLR and DSLR systems. I can use my 20mm f/1.8G on my Z system with the FTZ adapter as well. If you don't shoot SLRs or DSLRs then get this Z lens, but if you already own the AF-S 20mm f/1.8G I'd suggest trying the FTZ adapter first.

I use a clear (UV) protective filter instead of a cap so I'm always ready to shoot instantly. I only use a cap when I throw this in a bag with other gear without padding — which is never. The UV filter never gets in the way, and never gets lost, either.

The best protective filter is the 77mm Hoya multicoated HD3 UV which uses hardened glass and repels dirt and fingerprints.

For less money, the B+W 77mm 010 is an excellent filter, as is the multicoated version and the basic multicoated Hoya filters or the 77mm Nikon Clear (NC - UV), but the Hoya HD3 is the toughest and the best.

All these filters are just as sharp and take the same pictures, the difference is how much abuse they'll take and stay clean and stay in one piece.

I got my Z 20mm f/1.8 at Adorama. I'd also get it at Amazon, at B&H or at Crutchfield, or used at eBay if you know How to Win at eBay.

This 100% all-content, junk-free website's biggest source of support is when you use those or any of these links to my personally approved sources I've used myself for way over 100 combined years when you get anything, regardless of the country in which you live. Nikon does not seal its boxes in any way, so never buy at retail or any other source not on my personally approved list since you'll have no way of knowing if you're missing accessories, getting a defective, damaged, returned, non-USA, store demo or used lens — and all of my personally approved sources allow for 100% cash-back returns for at least 30 days if you don't love your new lens. I've used many of these stores since the 1970s because I can try it in my own hands and return it if I don't love it, and because they ship from secure remote warehouses where no one gets to touch your new lens before you do. Buy only from the approved sources I've used myself for decades for the best prices, service, return policies and selection.

Thanks for helping me help you!

Ken, Mrs. Rockwell, Ryan and Katie.

 

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02 December 2022, 12 October 2021, 10 July 2021, 04, 17, 28 October 2020, 12 February 2020