Tokina at-x Pro Dx for Digital Slr 11-20mm F/28 Pro Dx Review

Our Verdict

The Tokina AT-X 11-20mm f/2.viii Pro DX is well built and delivers wonderful image quality. The f/2.8 constant discontinuity is a bonus just autofocus accuracy proved inconsistent in our tests. Overall, it's a sterling buy at the price.

For

• Bright images
• Great build quality
• Dust and splashproof

Against

• Inaccurate automobile focus
• 1-touch on Focus Clutch Machinery is a bit fiddly

Digital Photographic camera Globe Verdict

The Tokina AT-X eleven-20mm f/2.8 Pro DX is well built and delivers wonderful image quality. The f/ii.8 constant discontinuity is a bonus merely autofocus accuracy proved inconsistent in our tests. Overall, it'south a sterling buy at the price.

Pros

• +

  Bright images

• +

  Great build quality

• +

  Dust and splashproof

Cons

• -

  Inaccurate auto focus

• -

  One-touch Focus Clutch Mechanism is a chip fiddly

Over contempo years, Tokina has become something of a broad-angle specialist. Its popular 11-16mm lens for APS-C format cameras dates back to 2008. A Mk II edition was launched dorsum in 2013. This more than recent eleven-20mm ultra-wide zoom extends the focal length range significantly, and makes it an attractive pick – not to the lowest degree because of its fast f/ii.8 maximum discontinuity. It is available in both Nikon F and Catechism EF mounts.

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Features

This Tokina xi-20mm extends the overall zoom range of the well-respected 11-16mm versions, while nonetheless maintaining a constant-aperture design, delivering f/2.viii at all focal lengths. 1 of the things that fabricated the original 11-16mm lens so pop was its combination of sturdy build and good optical functioning at an attractive selling price.

The 11-20mm feels similarly robust and features a weather-seal ring on its mounting plate. The Tokina has better build quality but unfortunately lacks the prototype stabilization that is present in its Catechism and Nikon equivalents.

An up-market place optical design includes two all-glass moulded elements and three SD (Super-low Dispersion) elements. At 560g, the Tokina is nearly 2 and a half times heavier than the Catechism 10-18mm and the Nikon x-20mm.

This is partly because of the metal rather than plastic mounting plate, but also due to the forward optical elements having a larger diameter, to enable the f/2.viii aperture compared with the Catechism'due south f/4.five-5.6 variable rating. As such, the filter thread is besides larger, at 82mm compared with the Catechism's 67mm.

Past contrast, the Tokina has a more basic electric motor with the company's trademark 'One-touch Focus Clutch Mechanism'. This enables you to switch between autofocus and transmission focus by snapping the focus band forwards or backward. Either way, you need to be careful non to nudge the ring accidentally, inadvertently switching between auto and manual focusing. On remainder, we prefer the transmission override facilities.

Sample paradigm gallery

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Although the shortest zoom setting is merely a millimetre longer than in competing Canon and Nikon lenses, the maximum viewing bending is noticeably less wide

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At its longest focal length of 20mm, the Tokina gives a little more reach than the Canon 10-18mm lens, but slightly less than the Catechism 10-22mm

Lab tests

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Centre sharpness is impressive even at f/2.eight and corner sharpness is pretty good for a wide-bending zoom.

Amounts of Lateral chromatic abnormality towards the edges and corners of the frame are average for this blazon of lens.

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Barrel distortion is a little noticeable at the short end of the zoom range just negligible at or about 20mm.

Operation

The Tokina is impressively sharp, even when shooting wide-open at f/2.8, at the short end of the zoom range. During our tests, however, sharpness was let down past inconsistent autofocus accurateness. The autofocus system is quick considering it'due south based on an electric motor, but is still rather noisier than in the competing Canon, Nikon, Sigma and Tamron lenses. Levels of colour fringing are typical for this type of lens but distortion is negligible at the long stop of the zoom range

Specifications

• Full-frame uniform: No
• Constructive focal length (Canon): 17.half dozen-32mm
• Effective focal length (Nikon): 16.5-30mm
• Image stabalizer: No
• Elements/groups: 16/11
• Minimum focus altitude: 0.27m
• Max magnification: 0.12x
• Manual focus override: No
• Focus limit switches: No
• Internal focus: Yes
• Filter size: 82mm
• Iris blades: 9
• Weather seals: Yes
• Supplied accessories: Hood
• Dimensions: 89mm ten 92mm
• Weight: 560g

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Verdict

This Tokina lens is well congenital and delivers wonderful epitome quality. The f/2.8 constant aperture is a bonus simply autofocus accuracy proved inconsistent in our tests. Overall, it'south a sterling buy at the price.

Features: iii.5/5
Build & handling: four/v
Image quality: 4/5
Value: 4/5
Overall: 4/five

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Source: https://www.digitalcameraworld.com/reviews/tokina-at-x-11-20mm-f28-pro-dx-lens-review

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