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Tokina 28-70mm f/2.8
FX, 35mm and DX; AT-X AF (c. 1990)
© 2011 KenRockwell.com. All rights reserved.

Intro   Specs   Performance   Compared   Recommendations

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Tokina AT-X 28-70mm f/2.8 AF

Tokina 28-70mm f/2.8 AT-X AF (72mm filters, 21.4 oz./608g, 2.3'/0.7m close focus, about $250 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      More Tokina Reviews   All reviews

Nikon Reviews    Nikon Lenses    Canon Reviews    Canon Lenses

Optics:
Mechanics:
Ergonomics:
Usefulness:
Availability:
Overall:

 

Ideal Uses

Perfect for use on FX digital and 35mm as a general-purpose fast medium zoom for everything.

 

Not for

It works, but I wouldn't lug around this big FX lens on a DX camera; I'd get a smaller DX lens instead. This won't autofocus with the cheapest Nikon D40, D40x, D60, D3000, D3100, D5000 or D5100.

 

Introduction       top

Intro   Specs   Performance   Compared   Recommendations

adorama

 
B&H Photo - Video - Pro Audio

Ritz Camera

I personally buy from Adorama, Amazon, Ritz, B&H, Calumet and J&R. I can't vouch for ads below.

 

This Tokina 28-70mm f/2.8 is a bargain of a fast medium zoom. It's all-metal and better built than anything from Nikon in this price range new.

It's optical performance isn't quite as good at f/2.8 as Nikon's $1,000 lenses, but this Tokina is super sharp most of the time, and it's smaller and lighter than any of Nikon's f/2.8 zooms. I'd rather carry this lens all day than the beastly Nikon 28-70mm f/2.8.

 

Compatibility       intro      top

This Tokina 28-70mm f/2.8 has come in mounts for Nikon, Canon, Pentax, Sony, Minolta, and I forget what else.

I'm addressing the Nikon mount version here; you may make the usual extrapolations for other mounts.

This is a full-frame (FX) lens, and I will be testing it as such.

This lens, in Nikon mount, works especially well with on FX, 35mm and DX Nikons like the D7000, D700, D3X, D300s and F6. It works fantastically on manual-focus cameras like the F2AS, F3, FE and FA, since it has real manual-focus and aperture rings that work exactly as they should.

The Nikon version 28-70mm f/2.8 AF works great with almost every film and digital Nikon camera made since 1977. You'll need to figure out a way to add a meter coupling prong for use with Nikons made from 1959-1976, if you want meter coupling that far back.

The only incompatibility is that it will not autofocus with the cheapest Nikon D40, D40x, D60, D3000, D3100, D5000 or D5100, but if you focus manually, everything else works great. These cameras have in-finder focus confirmation dots to help you.

See Nikon Lens Compatibility for details on your camera. Read down the "AF, AF-D (screw)" column for this lens.

Warning: as a non-Nikon lens, there is never any guarantee that this Tokina lens will always work perfectly with every possible camera. I've only used it on the D3 and D7000. There is always the potential for it not to work on some models of camera, today or newer models in the future. This is the one chance you take with non-Nikon lenses.

 

Tokina AT-X 28-70mm f/2.8 AF

Tokina AT-X 28-70mm f/2.8 AF. enlarge.

 

Specifications        top

Intro   Specs   Performance   Compared   Recommendations

 

Name       specs       top

Tokina calls this the Tokina AT-X 28-70mm F2.8 AF.

     AT-X: Advanced Technology-seX.

     AF: Autofocus.

 

Optics       specs       top

Conventional spherical elements.

Front-group focusing.

Front and rear groups move as zoomed.

Multicoated, but not as efficient as camera-maker-brand lenses.

 

Diaphragm       specs       top

Diaphragm, Tokina 28-70mm f/2.8 at f/5.6

Tokina 28-70mm f/2.8 at 50mm and f/5.6. enlarge.

8 straight blades.

Stops down to f/22 at infinity.

Engraved metal aperture ring with full-stop clicks.

 

Coverage        top

35mm film, FX and DX.

 

Focal Length        top

28-70mm.

When used on a DX camera, it gives angles of view similar to what a 42-105mm lens gives when used on an FX or 35mm camera.

 

Close Focus       specs       top

2.3 feet (0.7 meters).

 

Hard Infinity Focus Stop?       specs       top

YES!

Just set it at the stop for astronomical shots.

 

Focus Scale       specs       top

Yes.

 

Depth-of-Field Scale       specs       top

No.

 

Infra-Red Focus Indices       specs       top

Tokina 28-70mm f/2.8 AT-X Focus Scale

Tokina 28-70mm f/2.8 AT-X Focus Scale.

Yes, dots at 28mm, 50mm and 70mm.

 

Aperture Ring       specs       top

Yes, engraved metal.

Full-stop clicks.

 

Filter Thread       specs       top

72mm, metal.

Rotates with focus and moves in and out as zoomed.

 

Size       specs       top

3.6" (91mm) extension from flange by 2.9" (74mm) diameter, Nikon mount, measured at smallest size (zoom at 65mm and focus at infinity).

 

Weight       specs       top

21.430 oz. (607.5g), measured.

 

Hood       specs       top

Plastic bayonet.

 

Quality       specs       top

Made in Japan.

 

Performance       top

Intro   Specs   Performance   Compared   Recommendations

Overall   Auto and Manual Focus    Bokeh    Coma    Distortion  

Ergonomics   Eyeblow   Falloff    Filters   Flare and Ghosts

Focus Breathing   Color Fringes     Macro   Mechanics    

Sharpness   Spherochromatism   Sunstars   Survivability

 

Overall      performance      top

The Tokina AT-X 28-70mm f/2.8 AF is the smallest and lightest f/2.8 zoom I've ever seen. It's optics are softer than camera-brand zooms at f/2.8, but its mechanics are first rate. I'd depend on this lens to last me 30 more years over most lenses from Nikon today.

 

Auto and Manual Focus      performance      top

AF Speed

Autofocus is fast for normal uses.

One full turn (two half-turns) of the AF screw pulls focus from infinity down to 7 feet.

 

AF Accuracy

AF is always right-on on my D7000 and D3.

 

Manual Focus

Manual focus is beautiful! It's smooth and light, working without needing any lube or damping.

It's smooth and perfectly geared for the best possible combination of speed and precision.

 

Bokeh      performance      top

Bokeh is pretty good.

Bokeh is the character of out of focus areas, not simply how far out of focus they are.

 

Coma      performance      top

Coma, weird smeared blobs that appear around bright points of light in the corners, is present at the largest apertures and wider zoom settings. See also sagittal coma flare.

 

Distortion      performance      top

The Tokina AT-X 28-70mm f/2.8 AF has the usual distortion expected in a fast zoom: barrel at wide, and pincushion at tele. The Nikon 28-70mm f/2.8 AF-S has the same distortion at 28mm, and less at 70mm.

Plugging the figures into Photoshop's lens distortion filter to correct it. 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 at 3 meters (10')

FX and Film
at ∞

28mm
+3.0*
tbd
tbd
35mm
+0.5
tbd
tbd
50mm
-2.5
tbd
tbd
70mm
-3.0
tbd
tbd

© 2011 KenRockwell.com. All rights reserved.

* Some waviness remains after correction.

 

Ergonomics      performance      top

Tokina AT-X 28-70mm f/2.8 AF

Tokina AT-X 28-70mm f/2.8 AF.

Ergonomics are easy. Except that you still need to move a switch on your Nikon to swap between auto and manual focus, everything just feels right.

The all-metal construction and smooth manual focus really make this lens feel nice to use. My biggest whine is that the zoom range is congested at the 28mm end.

 

Eyeblow       performance     top

As the 28-70mm f/2.8 AF-S is zoomed in and out, very little air pumps in and out of the rear of the lens, and I can't detect any air blowing out of my eyepiece.

 

Falloff (darkened corners)      performance      top

Falloff on FX is minimal. It's invisible except at 28mm and f/2.8.

It will be even less of an issue on DX (see crop factor).

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

 

Tokina AT-X 28-70mm f/2.8 AF falloff on FX and film, no correction.

 
f/2.8
f/4
f/5.6
28mm
35mm
50mm
70mm

© 2011 KenRockwell.com. All rights reserved.

 

 

Filters, Use with      performance      top

The solid metal filter ring rotates with focus and moves in and out as zoomed.

There is no problem with vignetting, even at 28mm on FX. If you're going to have vignetting, it will be at 28mm.

 

Flare and Ghosts      performance      top

There is more flare and potential for ghosting than other lenses if pointed into the sun.

I wouldn't worry about using a hood, but do remember to shield the sun with your hand if it's glaring into the lens.

 

Focus Breathing      performance      top

Of interest mostly to cinematographers focusing back and forth between two subjects, the image from the Tokina 28-70 2.8 gets slightly smaller as focused more closely.

 

Lateral Color Fringes      performance      top

There are some lateral color fringes on the D3 or the D7000, which can't always correct them.

It's blue-yellow at 28mm, and gone from 35mm through 70mm.

 

Macro      performance      top

There's no separate macro mode; you can focus to 2.3 feet (0.7 meters) at every focal length.

 

Mechanics      performance      top

Tokina AT-X 28-70mm f/2.8 AF

Rear, Tokina 28-70mm f/2.8. enlarge.

This Tokina is a surprisingly well-made lens. It's not made in China out of plastic like most of Nikon's lenses today.

 

Filter Threads

Metal.

 

Hood

Plastic bayonet.

 

Hood Bayonet Mount

Metal.

 

Fore Barrel

Metal.

 

Focus Ring

Metal; rubber covered.

Distance markings are engraved into the metal and seen behind a clear plastic window.

 

Mid-barrel Exterior

Plastic.

 

Zoom Ring

Metal; rubber covered.

 

Aft Barrel Exterior

Plastic.

 

Internals

Seem like metal.

 

Aperture Ring

Metal with engraved and filled numbers.

 

Mount

Metal. Mounts almost as well as Nikon's mounts.

 

Markings

Paint.

 

Identity

Engraved on front ring, and painted on midbarrel.

 

Serial Number

Engraved and filled with paint on bottom of aperture ring.

 

Rain seal at mount

No.

 

Noises When Shaken

Mild clicking and klunking.

 

Made in

Japan.

 

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.

 

At 28mm

It's completely sharp, even on an 16 MP DX Nikon D7000, at f/2.8 in the center.

The corners of FX are blurry at f/2.8, much better at f/4, and optimum by f/8.

 

At 35mm

It's completely sharp, even on an 16 MP DX Nikon D7000, at f/2.8 in the center.

The corners of FX are a little blurry at f/2.8, much better at f/4, and optimum by f/8.

 

At 50mm

It has a little "Tokina glow" (spherical-aberration induced softness or haziness) at f/2.8 in the center of a 16 MP DX Nikon D7000. It's completely clear by f/4.

The corners of FX are a little blurry at f/2.8, much better at f/4, and optimum by f/8.

 

At 70mm

It has a plenty of "Tokina glow" (spherical-aberration induced softness or haziness) at f/2.8 in the center of a 16 MP DX Nikon D7000. It's completely clear by f/4 or f/5.6.

The corners of FX are a little softer at f/2.8, and optimum by f/8.

 

Spherochromatism       performance     top

I can't see any spherochromatism. Whatever may or may not be here is hidden in the spherical aberration at long zoom settings and wide apertures.

 

Sunstars      performance      top

With its straight 8-bladed diaphragm, this Tokina 28-70 2.8 should make 8-pointed sunstars on bright points of light.

To get a 9-bladed diaphragm in a Tokina midrange zoom, look for the 28-80mm f/2.8 ATX-AF PRO.

 

Survivability       performance     top

The Tokina 28-70mm f/2.8 seems pretty solid, so long as you don't bash the front of the lens into something and break the zoom system.

Otherwise, it seems destined to last a lifetime. There's no plastic, as there is on even today's $1,800 Nikon 24-70mm f/2.8 AF-S.

 

Compared             top

Intro   Specs   Performance   Compared   Recommendations

Compared to Nikon's professional midrange zooms, this Tokina is much softer at f/2.8 in the corners at 28mm and all over at 70mm, but this Tokina weighs and costs much less.

Distortion is about the same as Nikon's pro zooms.

This Tokina's focus ring turns far more fast and smoothly than any of Nikon's zooms.

Compared to the newer Tokina f/2.8 midrange zooms, this is the smallest and lightest. The newer lenses are bigger, heavier and tougher, however their optics are no better. In fact, the f/2.6-2.8 lens appears to have exactly the same optics, simply put into a different barrel and renamed to "f/2.6-2.8" by the sales department.

 
Tokina 28-70/2.6-2.8
Tokina 28-80/2.8
Filter
72mm
77mm
77mm
Filter Ring
Metal, rotates
fixed
fixed
Zoom
Front moves in and out
Moves inside barrel
Moves inside barrel
Optical quality
"Tokina Glow" at 70mm
same optics as Tokina 28-70/2.8
"Tokina Glow" at 80mm
Diaphragm blades
8
8
9
Close focus

2.3'/0.7m

2.3'/0.7m

2.3'/0.7m

Focus switch
On camera
"PRO" Push-pull clutch
"PRO" Push-pull clutch
Have to index focus ring to get back to AF?
No
Yes
 
Weight
21.4 oz./608g
   
Price    

 

Recommendations       top

Intro   Specs   Performance   Compared   Recommendations

This Tokina AT-X 28-70mm f/2.8 AF is an inexpensive, well-built, light weight and fast midrange zoom. If you don't mind slightly less contrast at f/2.8 in the corners or at 70mm, you can save a whole lot of money and weight over the equivalent Nikon zoom, and this lens feels so good in-hand.

In fact, this f/2.8 Tokina is about the same size and weight as many of Nikon's slower zooms, and stopped down to the same apertures, as good as the other zooms. The extra stop of speed is essentially free, and always there for you if you need it, even if it's not quite as good as Nikon's f/2.8 lenses at f/2.8.

 

More Information

Both of these links go to casual amateur attempts to define what version does what; they are probably loaded with errors, but are points to consider if you're trying to make sense of the chromology.

I have three versions of this lens, this 28-70/2.8, the 28-70/2.6-2.8 and the 28-80/2.8, and all perform about the same optically, which is much worse than the Nikon 28-70/2.8 at f/2.8, especially in the corners and at the long end.

None of these Tokinas is sought after by anyone; they are inferior to Nikon, but much less expensive, too. I've never been a fan of the optics of the Canon 24-70/2.8, however, so especially consider these Tokina for Canon.

One layman's summary of the different versions.

Another laymans's summary of different versions.

 

Help me help you         top

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Thanks for reading!

 

 

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

 

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