Review Lens: Tokina AT-X 11-20 F2.8 PRO DX Canon

Lens Overview - Tokina AT-X 11-20 F2.8

A versatile wide-angle zoom for Canon APS-C-format DSLRs, the AT-X 11-20mm f/2.8 PRO DX Lens from Tokina offers a 17.5-32mm equivalent focal length and features a constant f/2.8 maximum aperture for maintained brightness throughout the zoom range. One P-MO hybrid aspherical element and two glass-molded aspherical element work in tandem to minimize distortions and control various aberrations while three SD ultra-low dispersion elements reduce chromatic aberrations for increased clarity. A multi-layer lens coating has also been applied to further enhance overall light transmission and color accuracy by suppressing lens flare and ghosting. Well-suited to working in a wide variety of situations, this ultra-wide zoom covers an array of wide-angle perspectives while maintaining consistent illumination for working in challenging lighting.

Benefitting the usability, a one-touch focusing clutch permits quick switching between autofocus and manual focus modes, and an internal focusing design maintains the overall length of the lens during use. The medium-torque focusing ring further benefits precise handling by allowing for refined control when manually focusing. Additionally, this lens sees the incorporation of a nine-blade diaphragm, which contributes to a pleasing out-of-focus quality when employing shallow depth of field shooting techniques.

Compatible with Canon APS-C-format DSLRs, this wide-angle zoom provides a 17.5-32mm equivalent focal length and features a constant f/2.8 maximum aperture for consistent low-light performance throughout the zoom range.
One P-MO hybrid aspherical element in the front group pairs with two glass-molded aspherical elements in the rear group to minimize distortions and correct aberrations.
Additionally, three SD ultra-low dispersion elements are also incorporated within the lens design to further reduce chromatic aberrations for greater color accuracy and clarity.
Multi-layer lens coatings reduce lens flare and ghosting for greater contrast and maintained color fidelity.
A one-touch focus clutch mechanism permits seamless switching between autofocus and manual focusing positions, and the focusing ring features a moderate amount of torque for more fine-tuned control over the focusing position.
An internal focusing mechanism maintains the overall lens form factor during operation.
A nine-blade diaphragm contributes to a smooth out-of-focus quality, which benefits the use of shallow depth of field techniques.

Tokina AT-X 11-20 F2.8 Latest Price



Focal Length11 to 20mm (35mm Equivalent Focal Length: 17.5 to 32mm)
Maximum Aperturef/2.8
Minimum Aperturef/22
Lens MountCanon EF
Format CompatibilityAPS-C
Angle of View104.34° to 72.42°
Minimum Focus Distance11.02" / 28 cm
Maximum Magnification0.12x
Optical Design14 Elements in 12 Groups
Diaphragm Blades9
Focus TypeAutofocus
Image StabilizationNone
Filter Size82 mm (Front)
Dimensions (ø x L)3.5 x 3.62" / 89 x 92 mm
Weight1.23 lb / 560 g

Photos Example - Tokina AT-X 11-20 F2.8

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Lens Technical

Tokina AT-X 11-20 F2.8 PRO DX CanonPentax HD DA* 11-18mm F2.8 ED DC AWCanon RF 70-200mm F2.8L IS USM
Name Tokina AT-X 11-20 F2.8 PRO DX CanonPentax HD DA* 11-18mm F2.8 ED DC AWCanon RF 70-200mm F2.8L IS USM
Max Aperture At Min Focal f/2.8f/2.8f/2.8
Year 201420192019
Mount Type Canon EF-SPentax KAFCanon RF
Lens Type Lens Superwide,lens WideLens SuperwideLens Medium,lens Telephoto,lens Supertelephoto
Auto Focus NoNoNo
Price $599$1840
Lens Zoom ZoomZoomZoom
Lens Range 111170
Global 16.7202
Effective Mega Pixel 9.73435
Distorsion 0.373746
Vignetting -0.757165
Tstop 2.97824
Ac 14.627
Vignetting Ranking 4672
Tstop Ranking 3983
Ac Ranking 10174
Pixel Depth 24.2
Price Sensor 850
Sensor Raw 24.23
Sensor Format Sensor Apsc
Type EntryLevelDSLR
Zoom Factor 111
Weight 1lb1lb1lb
Macro NoNoNo
Launch Date Sep. 2014Jan. 2019Feb. 2019
Brand TokinaPentaxCanon


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