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Optical design
| Format: APS-C (crop)
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Sony A / Minolta A, Sony A / Minolta A, Sony A / Minolta A, Sony A / Minolta A, Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX)
First year of production: 2007
Optical design: 13 elements in 11 groups, 2 aspherical lenss and 2 low-dispersion lens
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 11mm - 16mm | f/2.8 | f/22 | 9 | 0.3 | 77 | 560/19,8 | 89.2/3,5 |
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Additional information:
The Tokina AT-X 116 PRO DX AF 11-16 mm f/ 2.8
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equivalent focal length: 18-24 mm for APS-C cameras
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angle of view 104°~82°
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water repellent coating of the front element
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Internal Focus (IF)
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micro-motor for auto-focusing for Canon
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no built-in motor for AF for Nikon
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diameter: 84 mm
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it comes completed with petal BH-777 hood and a case
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the lens is not moisture or dust resistant
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reverse direction of the zoom ring rotation for Canon
The Tokina AT-X 116 PRO DX AF 11-16mm f/2.8is a fast wide-angle zoom lens with constant maximum aperture which can be used only on APS-C cameras with the Canon EF-S or the Nikon DХ bayonet mounts and cannot be used on cameras with full-frame sensors.
Based on an outstanding optical scheme of the AT-X 124 PRO DX (12-24mm f/4), the new AT-X 116 PRO DX has slightly more narrow zooming range to maintain an appropriate optical quality when wide open.
The lens is equipped with the so called One-touch Focus Clutch Mechanism, i. e. the choice between manual focusing and auto-focusing modes with one touch. In order to switch autofocus mode you should slightly shift the focus ring forward. To engage manual focusing the focus ring should be shifted back to the camera. The switch requires some effort and is followed with a click sound. While switching, it is possible to defocus.
Evaluation of Tokina designations:
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AT-X (advanced technology extra) - the lens is designed by means of advanced and new technologies and high-quality materials.
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PRO - models with this designation have an aluminum coating to improve its reliability and to have an ergonomic look corresponding its high quality.
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AF for autofocus.
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DX - for digital SRL Canon EF-S and Nikon DX APS-C cameras only.
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IF - internal focusing (the size does not change, the front element does not rotate).
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SD - Super Low Dispersion glass is used to minimize aberrations and increase contrast (marked dark blue on the optical scheme).
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AS - aspherical lenses are used. (marked red on the optical scheme).
Links to online resources:
PDF Files:
Posted by: a2012 Date of publication: 25.10.2010
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