Tokina At-X 11-20mm F/2.8 Pro Dx Nikon Wide-angle Zoom Lens  (Black, 11- 20 mm)

A Versatile Wide-Angle Zoom For Nikon Dx-Format Dslrs, The At-X 11-20mm F/2.8 Pro Dx Lens From Tokina Offers A 16.5-30mm 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 Nikon Dx-Format Dslrs, This Wide-Angle Zoom Provides A 16.5-30mm 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.