Additional information:
The Tokina AT-X 124 PRO DX AF 12-24 mm f/ 4
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Wide diagonal angle of view 99° - 61°
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Max. magnification 1:8 (0.13)
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Diameter 84 mm
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Equivalent focal length for APS-C cameras 19-38 mm for Canon or 18-36 mm for Nikon
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Internal focusing
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LH777-01 reverse plastic hood and a case included
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Rotation angle of the focusing ring approx. 90°
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Micro-motor AF drive for Canon
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It is not equipped with a built-in auto-focus motor for Nikon low-end models
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Reverse direction of the zoom ring rotation for Canon
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The lens is not moisture or dust resistant
The Tokina AT-X 124 PRO DX 12-24mm F4is a superwide-angle zoom lens with a constant maximum aperture throughout the entire range, being the first Tokina lens designed for DSLR APS-C cameras with Canon EF-S and Nikon DX bayonet mounts (it is incompatible with full-frame sensor cameras). In 2008 the second version of this lens marked with index II and red stripe was put on sale. This lens is remarkable for a new ultra-sonic AF wave motor and improved coating.
The Tokina AT-X 124 PRO DX AF 12-24 mm f/ 4is equipped with a proprietary One-touch Focus Clutch Mechanism. In order to switch to 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. The focus ring does not rotate during autofocus operations.
The Tokina AT-X 124 PRO DX AF 12-24 mm f/ 4 covers a full frame in the range of 18-24 mm.
In 2008 it was replaced with the Tokina AT-X 124 PRO DX II 12-24mm F4
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 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 lens does not extend, the front element do not rotate).
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SD - Super Low Dispersion glass is used to minimize aberrations and increase contrast
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AS - aspherical lenses are used. (marked red on the optical scheme).
Links to online resources:
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Posted by: dv Date of publication: 24.10.2010
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