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Nikon 135mm f/2
NIKKOR, AI and AI-s (1975-2005)
© 2011 KenRockwell.com. All rights reserved.

Intro    Specifications    Performance   Compared   Recommendations

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Nikon 135mm f/2

Nikon 135mm f/2 AI-s (72mm filters, 30.2 oz./855g, 4.25'/1.3m close-focus, about $400 used). enlarge. This free website's biggest source of support is when you use any of these links, especially this direct link to this lens at eBay (see How to Win at eBay), when you get anything, regardless of the country in which you live. Thanks! Ken.

August 2011      Nikon Reviews   Nikon Lenses   All Reviews


Ergonomics: (manual focus)

Nikon only made about 45,000



See also:

Nikon AF-D 135mm f/2 DC

Nikon 135mm f/2.8 AI-s

Nikon 135mm f/3.5 AI


Introduction       top

Intro    Specifications    Performance   Compared   Recommendations

Compatibility    History    Production    Pricing


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The Nikon 135mm f/2 AI and AI-s have been professional secrets for decades. Offering a long focal length and super f/2 speed in a marginally pocketable lens, the 135/2 is longer and faster than just about anything else a reasonable person would wish to carry.

The 135mm f/2 is a superb portrait lens, especially for defocusing backgrounds. This 135mm f/2's bokeh is excellent.

Unlike the throw-away plastic lenses of today, this fully professional silky-smooth all-metal lens is built to last for more than a lifetime of spectacular images. Thankfully, today's 135mm f/2 DC is built just as well.


Compatibility       intro     top

The manual-focus Nikon 135mm f/2 AI and AI-s works great with most Nikon cameras, 35mm and digital.

It works flawlessly with every manual focus Nikon ever made, from the F of 1959 through the FM3a and today's FM-10.

On the D3X, D3s, D3, D7000, D700, D300, D200, D2 and F6, use the "Non-CPU Lens Data" menu option to set 135mm and f/2 to get full color matrix metering, EXIF data and finder read-out of set aperture. It works great in aperture-preferred as well as manual modes on these cameras.

It works perfectly on every professional 35mm camera (F, F2, F3, F4, F5, F6), and adds Matrix metering on the FA, F4 and F6.

The meters of cheaper digital (D90, D5000 and below) and cheaper film cameras (N80 and below) will not couple (or work at all) with this lens, so you'll be on your own guessing exposure using the rear LCD or an external meter, or get a tiny Gossen Digisix meter and hotshoe adapter to meter manually.

If you have one of the very early non-AI samples,(1975-1977, serial numbers below 180000), you'll need to have your lens AI-converted to work on cameras made since 1977. Even these oldest samples still work great on every Nikon made 1959-1977, and of course all the AI and AI-s work great on the newest digital Nikon DSLRs.

See Nikon Lens Compatibility for details on your camera. Read down the "AI, AI-s" column for this lens.


History        intro       top

All of these lenses have the same optics.

Only the mechanics and cosmetics were changed as the years rolled on.



Nikon first sold this as the 135mm f/2 AUTO NIKKOR IC.

AUTO meant an automatic diaphragm that reopened back to f/2 after each shot. That was hot stuff in the 1960s, but taken for granted today.

IC meant Integrated Coating, which is multicoating.

This first version was not AI; one had to turn the aperture ring back and forth to get the camera's meter to couple to the lens when mounted.

One needs AI kit 41 to update it to AI for use with Nikon's newest cameras.



Nikon updated this lens to AI, Automatic Indexing.

Now all we have to do is attach the lens and its aperture ring indexes with the meter automatically. It still works the same way on today's newest Nikons.



Nikon updated this lens to AI-s, which is the same as AI, with the addition of a different diaphragm mechanism to make automatic exposure easier for the Nikon FA.

The AI-s version has its depth-of-field markings on the silver ring, has slightly faster manual focus gearing and has a slightly longer hood, otherwise, a 2005 AI-s sample is the same thing and works exactly the same as a 1975 model after it's been AI-converted.

Nikon USA stopped importing them in 1996, so from 1997-2005 they came into the USA only as gray market.



Nikon introduces the 135mm f/2 DC, and continues to make this original 135mm f/2 for another 15 years alongside it!

The 135mm f/2 DC has completely different optics.


Production        intro       top

Nikon made about 5,000 non-AI 135mm f/2 lenses from 1975-1977.

Nikon made about 7,500 AI 135mm f/2 lenses from 1977-1981.

Nikon made about 32,000 AI-s 135mm f/2 lenses from 1981-2005.


Pricing        intro       top

Price in that era's dollars
about $400 used
about $400 used

* Corrected for inflation, 2011, and at full NYC discount. Very few people bought their lenses this inexpensively back then.

** Gray market.


Nikon 135mm f/2

Nikon 135mm f/2 AI-s. enlarge.


Specifications         top

Intro    Specifications    Performance   Compared   Recommendations


Nikon calls this the Nikon NIKKOR 135mm f/2 AI-s (1981-2005), AI (1977-1981) or AUTO-NIKKOR IC (1975-1977).


Optics            top

6 elements in 4 groups, an Ernostar variant configured by Yasushi MATSUI, who also designed the 180 mm f/2.8.

The Ernostar, designed in 1923 by Ludwig Jakob Bertele while working at H. Ernemann, was the world's first f/2 lens for still photography. The H. Ernemann company was eventually bought by Zeiss.

The highly asymmetrical and unit-focusing design of the Ernostar leads to more spherical aberration at close distances than symmetrical lenses like the Gauss variants. This is used to great advantage in the Nikon 135/2, as it's corrected for super-sharp images at far ranges, and the extra spherical aberration contributes to incredible bokeh at portrait distances.

It's multicoated, which Nikon called IC, Integrated coating, and then Nikon Super Integrated Coating (SIC).


Diaphragm            top

Nikon 135mm f/2

Nikon 135mm f/2 AI-s at f/5.6. enlarge.

9 straight blades.

Stops down to f/22.


Aperture Ring            top



Full-stop clicks.


Close Focus            top

4.25 feet.

1.3 meters.


Maximum Reproduction Ratio            top



Angle of View        top

18° on FX and 35mm.


Focal Length        top


On a small-format DX camera, this lens sees an angle-of-view similar to what a 200mm lens would see on a full-frame camera.


Hard Infinity Focus Stop?            top


This is great for astronomy; just turn to the stop and you have fixed laboratory-perfect focus all night.


Focus Scale            top



Depth-of-Field Scale            top



Infra-Red Focus Index            top

Yes: red dot in depth-of-field scale.


Filter Thread            top

72mm, metal.

Does not rotate.


Size            top

Nikon specifies 93.5mm extension from flange (103mm overall) by 81mm diameter.

Nikon specifies 3.7" extension from flange (4.05" overall) by 3.2" diameter.


Weight            top

30.152 oz. (854.8 g), measured, AI-s version.

Nikon specifies 30.3 oz. (860 g) for all versions.


Hood            top

Nikon 135mm f/2

Nikon 135mm f/2 AI-s.

Built-in telescoping metal hood.

Flocked interior, non-locking.


Case            top

CL-15 tubular case included.


Quality         top

Made in Japan.


Teleconverters            top

TC-200/201 and TC-14A.

Nikon warns of potential "uneven exposure" at high shutter speeds or apertures smaller than f/11, but after reading these warnings for over 25 years I still have no idea what they're talking about.


Packaging            top

Gold-foil box, closed-cell white foam innards.


Performance       top

Intro    Specifications    Performance   Compared   Recommendations

Overall   Focus    Bokeh    Color    Coma    Distortion

Ergonomics   Falloff    Filters   Focus Breathing   Color Fringes

Mechanics    Sharpness    Spherochromatism    Sunstars


Overall      performance     top

The 135mm f/2 AI-s is a marvelously precise chunk of professional performance.

It's optics are superb, and its Bokeh is particularly extraordinary.

It has some spherochromatism and spherical aberration that improve bokeh, but demand precise focus to avoid colored fringes if you're a window-screen photographer.

The 135.2 AI-s is an extraordinary portrait lens.


Focus      performance     top

Manual focus as smooth as silk, perfectly damped and with no play.

The D3, D3X, D3s, D700, D7000, F4, F5, F6 and most professional AF cameras have three very precise electronic manual focus indicators, with which this lens works perfectly.

Lesser digital cameras, like the D300s and down, usually have just one "OK" focus dot, which is not as precise as two arrows and a dot.

This will vary from sample-to-sample of camera and from sample-to-sample of lens, and my sample focused perfectly to just a tad close at f/2.

Focus is critical for the sharpest results at f/2. If you're not getting the results you expect, it's probably a lack of perfect focus on your part, not the lens.


Bokeh      performance     top

Bokeh, the character of out-of-focus backgrounds, not simply how far out of focus they are, is excellent. Even at smaller apertures like f/5.6, edges of out-of-focus highlights fade smoothly, letting backgrounds just melt away.

Here are full FX images focused on a reference phase lattice at 3 meters (10 feet) with synthetic reference vegetation at 15 meters (50 feet). This is about the distance at which you'd shoot head-and-shoulder portraits.

Nikon 135mm f/2 AI-s bokeh at f/2

Nikon 135mm f/2 AI-s bokeh at f/2.8

Nikon 135mm f/2 AI-s bokeh at f/4

Nikon 135mm f/2 AI-s bokeh at f/5.6


Color Rendition      performance     top

The color rendition of this Nikon 135mm f/2 matches all my other modern NIKKOR lenses.


Coma      performance     top

I don't see any coma, which usually affects wide, not tele lenses.


Distortion      performance     top

The Nikon 135mm f/2 AI-s has no visible distortion.

For scientific or other more critical uses, what invisible pincushion distortion remains can be corrected fully by plugging these figures into Photoshop's lens distortion filter. These aren't facts or specifications, they are the results of my research that requires hours of photography and calculations on the resulting data.

FX and Film
10' (3m)

© 2011 KenRockwell.com. All rights reserved.


Ergonomics      performance     top

Nikon 135mm f/2

Nikon 135mm f/2 AI-s. enlarge.

The Nikon 135mm f/2's ergonomics are perfect, just like all of Nikon's manual-focus lenses.

Grab the focus ring and go. You can flick it and the aperture ring with a finger tip.

My only whine is that the hood has no lock, and keeps getting pushed-in with use.


Falloff (darkened corners)          performance     top

Falloff on FX is minor at f/2, and invisible at other apertures.

It won't be an issue at all on DX (see crop factor).

I've exaggerated this by shooting a gray field and placing these on a gray background.


Nikon 135mm f/2 AI-s falloff on FX and film at infinity, no correction.


© 2011 KenRockwell.com. All rights reserved.




Filters, Use with      performance     top

There is no problem with vignetting, even with combinations of thick filters.

This is typical for long lenses.


Focus Breathing       performance     top

Of interest mostly to cinematographers focusing back and forth between two subjects, as a unit-focusing lens, the image from the Nikon 135mm f/2 AI-s gets larger as focused more closely.


Lateral Color Fringes      performance     top

There are no lateral color fringes on the D7000 or D3, which corrects them.

There is some spherochromatism, which is a different color aberration that affects only out-of-focus sections of the image.


Mechanics      performance     top

Nikon 135mm f/2

Nikon 135mm f/2 AI-s. enlarge.

Like all Nikkor manual focus AI-s lenses, the Nikon NIKKOR 135mm f/2 AI-s is built to the highest mechanical standards of any lens ever made. LEICA lenses aren't built any better, and in fact, NIKKOR lenses stay perfectly clear and don't get foggy after a couple of decades as LEICA lenses do.


Barrel Exterior

Anodized and enameled aluminum.


Filter Threads

Anodized aluminum.



Anodized and enameled aluminum.

Internal flocking.


Focus Ring

Metal, rubber covered.


Focus Helicoids

Brass and aluminum: smooth and silky with no play or need for damping grease.


Depth-of-Field Scale

Engraved and filled with different colors of paint, coded to the color painted for the various f/stops on the aperture ring.



All metal.


Aperture Ring

Cast aluminum, anodized and enameled.

Engraved markings filled with different colors of paint coded to the depth-of-field scale.



Dull-chromed brass.



Engraved into the metal and filled with paint.


Identity and Serial Number

On the outside of the hood, engraved and filled with paint.


Dust seal at mount



Noises When Shaken

Mild clicking from the diaphragm blades and their actuation system.


Made in



Sharpness      performance     top

Warning 1: Image sharpness depends more on you than your lens.

Warning 2: Lens sharpness doesn't mean much to good photographers.

With those caveats, the 135mm f/2 AI-s is slightly soft from spherical aberration and spherochromatism at f/2, much better at f/2.8, and super-sharp from f/4 on.

If your images aren't sharp or have color fringes, it's because they aren't in perfect focus. Focus is critical with such a long, sharp lens.


Spherochromatism      performance     top

The Nikon 135mm f/2 has some spherochromatism, meaning that out-of-focus background highlights can sometimes take on green color fringes, and foreground highlights can take on color fringes. (Laymen erroneously call this "color bokeh.")

This helps the bokeh, since background highlights are often green vegetation, which spherochromatism blurs even more.


Sunstars      performance     top

With its straight 9-bladed diaphragm, the 135mm f/2 makes magnificent 18-pointed sunstars on bright points of light.

Sunstar, Nikon 135mm f/2

Nikon 135mm f/2 at f/5.6 and 30 seconds, ISO 500, cropped from Nikon D3.


Compared        top

Intro    Specifications    Performance   Compared   Recommendations


Compared to the Nikon 135mm f/2 DC

The Nikon 135mm f/2 DC is sharper at f/2; this original 135mm f/2 is slightly softer than the 135/2 DC at f/2, and just as sharp stopped down. Bokeh is about the same between the two.

The Nikon 135mm f/2 DC has a rounded diaphragm, so it doesn't make sunstars as well as this lens.

The built-in telescoping hood of the 135mm f/2 DC screw-locks in place, while the same hood on the manual-focus lenses won't lock in place, so it slips back in use.

The Nikon 135mm f/2 DC is a traditional screw-focus autofocus lens, which most people will prefer over manual-focus only.

The Nikon 135mm f/2 DC weighs a little bit less (818g versus 855g) and takes the same 72mm filters.

The Nikon 135mm f/2 DC focuses slightly closer (1.1 versus 1.3 meters).

Thankfully, today's 135mm f/2 DC is built just as well.

A Nikon 135mm f/2 DC costs three times as much, used or new.


Compared to the slower Nikon 135mm manual-focus lenses

The Nikon 135mm f/2.8 AI-s and Nikon 135mm f/3.5 AI have the same optical performance at the same f/stops. The only difference is the ability to open to larger apertures or not, with the attendant loss in quality.

In other words, at f/4, all three lenses (this f/2, the f/2.8 and f/3.5) all perform the same.

The only reason to pay more for a faster version is to be able to use the faster f/stop.

If you're shooting at f/3.5 or smaller, all three lenses are optically indistinguishable, and all you've accomplished with the faster lens is paying more for it, and more weight to carry.

If sunstars are your thing, this f/2 has a magnificent 9-bladed diaphragm, while the f/2.8 and f/3.5 only have 7 blades.

This 135/2 uses a much larger 72mm filter, while the f/2.8 and f/3.5 versions take the standard 52mm filter.

Of course if you want spectacular defocus effects and are shooting at f/2, the slower lenses can't shoot at f/2. Even the 135mm f/3.5 will defocus the background fa more than a 50mm lens, while the f/2.8 and f/2 will do it a little bit more. If money is tight, the slower 135mm lenses are still wonderful, while the f/2 is fantastic for bokeh.


Recommendations       top

Intro    Specifications    Performance   Compared   Recommendations

The Nikon 135mm f/2 AI-s is a manual-focus only lens. It's a solid professional portrait lens.

It's inexpensive to buy used, and will last more than a lifetime.

The Nikon 135mm f/2 DC is a spectacular lens, but if you don't mind turning the focus ring for yourself, this classic 135/2 can save you almost $1,000.


More Information

Nikon's story about the 135/2's optical design.


Deployment      top

Get a new pinch-type 72mm Nikon front cap. The flatter originals never were as handy.

I'd leave either a 72mm Nikon Clear (NC - UV) filter, or a 72mm Hoya Super HMC UV on the lens at all times.

If I was working in nasty, dirty areas, I'd forget the cap, and use an uncoated 72mm Tiffen UV filter instead. Uncoated filters are much easier to clean, but more prone to ghosting.

For color slides like Velvia 50, I use a 72mm Nikon A2 filter outdoors.

For B&W film outdoors, I'd use a 72mm Hoya HMC Yellow K2 or 72mm Hoya HMC Orange.


Help me help you         top

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The biggest help is when you use any of these links to Adorama, Amazon, B&H, eBay, Ritz, Calumet and J&R and when you get anything. It costs you nothing, and is this site's, and thus my family's, biggest source of support. eBay is always a gamble, but all the other places always have the best prices and service, which is why I've used them since before this website existed. I recommend them all personally.

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Thanks for reading!

Mr. & Mrs. Ken Rockwell, Ryan and Katie.

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