Tokina AT-X Pro 11-20mm f/2.8 SD (IF) DX Autofocus APS-C Lens for Nikon F-Mount {82}

Model #370099
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Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
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Tokina's 11-20mm f/2.8 DX: fast glass across the wide end

An 11-20mm range on an APS-C body translates to roughly 16-30mm full-frame equivalent, putting tight interiors, sweeping landscapes, and environmental portraits all within a single zoom. The constant f/2.8 aperture holds across that entire range, which matters when you're shooting at dusk or working under mixed artificial light where stopping down isn't an option. SD (Super Low Dispersion) glass elements keep chromatic aberration in check at those wide angles where it tends to rear up hardest, and Internal Focus means the front element doesn't rotate during focus, so any circular polarizer or graduated ND filter you've dialed in stays exactly where you put it.

The 82mm filter thread is on the larger side, but that's the physical reality of an f/2.8 front element at 11mm. AT-X Pro construction signals that this is Tokina's professional-grade build tier, not a consumer-series optic. Autofocus is handled natively on Nikon F, so it integrates cleanly with in-body AF drive systems across Nikon's APS-C lineup. For shooters who work events, real estate, or interior architecture and need a fast wide zoom without carrying two primes, this lens consolidates a lot of capability into one mount.

Who It's For

Real estate and architectural photographers get the 11mm end for tight rooms and narrow facades, with f/2.8 keeping exposures manageable in artificially lit interiors where a tripod isn't always practical. Landscape photographers working with Nikon APS-C bodies gain a fast wide option with SD glass controlling the color fringing that wide, high-contrast scenes tend to produce. Documentary and event shooters benefit from the constant f/2.8 in low-light venues where the focal range covers both environmental context and tighter environmental portraits. The non-rotating front element via Internal Focus makes it equally practical for any shooter who relies on filter systems outdoors.

Key Features

  • Constant f/2.8 aperture across 11-20mm zoom range
  • SD glass elements minimize chromatic aberration
  • Internal Focus design keeps filter position locked
  • 82mm filter thread
  • AT-X Pro professional-grade construction
  • Native Nikon F autofocus integration
  • 16-30mm full-frame equivalent on APS-C

FAQ

What's the full-frame equivalent focal length on an APS-C body?
11-20mm on APS-C translates to roughly 16-30mm full-frame equivalent, covering wide environmental work through tight interiors and environmental portraiture in a single zoom.
Does the aperture stay constant across the zoom range?
Yes. The f/2.8 maximum aperture holds from 11mm through 20mm, which is critical for low-light shooting where you can't afford to stop down.
What does the Internal Focus (IF) design mean for filter use?
The front element doesn't rotate during focusing, so any circular polarizer or graduated ND filter you've set stays locked in position throughout the zoom and focus range.
Why is the filter thread 82mm?
That's the physical consequence of an f/2.8 front element at 11mm. Wider, faster glass requires larger optics, which means a larger filter diameter.
How does SD glass help at these wide angles?
Super Low Dispersion elements suppress chromatic aberration, which is most visible at the wide end of the zoom where edge rendering is already under stress.
Will this autofocus on my Nikon APS-C body?
Yes. Native Nikon F autofocus integration means the lens uses your camera's in-body AF drive system without compatibility issues across Nikon's APS-C lineup.
SpecificationValue
Focal Length11-20mm
Max Aperturef/2.8
MountNikon F
Filter Thread82mm

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Tokina
Filter Size 82mm
Focus Type Autofocus (lens motor)
Lens Mount Nikon F Mount G Type
Lens Type Wide-Angle
Max Focal Length 20mm
Min Focal Length 11mm

Learn what to expect cosmetically from each grade. Images are representative and may not reflect the exact item. All gear is guaranteed functional unless noted. Accessories are typically not included unless listed. Like New through Bargain grades include a 180-day warranty. Items may also be available.

Exceptions


New
New in box complete with manufacturer's USA warranty. Not previously owned or used.
Like New
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
As Is
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.

Like New Minus

Like New Minus
Like New Minus

Like New Minus

Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Excellent Plus

Excellent Plus
Excellent Plus

Excellent Plus

Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Excellent

Excellent
Excellent

Excellent

Noticeably used with average signs of wear with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. 180-day warranty.

Bargain

Bargain
Bargain

Bargain

Heavily used with noticeable cosmetic and optical wear, but performance is mostly unaffected. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall. 180-day warranty.

Ugly

Ugly
Ugly

Ugly

Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.

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