For Immediate Release
May 8, 2015

Kenko Tokina Co., Ltd. is pleased to announce the new AT-X 24-70mm F2.8 PRO FX


Three all-glass precision molded aspherical lens elements combined with three super low dispersion (SD) glass elements that yield maximum resolution. Additionally, our optical engineers have been able to reduce light fall-off for even illumination across the entire image and control edge-distortion common among other lenses in this focal length range. Optimized optical formulas produce exceptional contrast, color and clarity for crisp , sharp images.

Chromatic aberrations are corrected and controlled though the use of three SD super low distortion glass elements (G09, G10 and G14) arranged in the rear lens group. The G09 lens is non-spherical convex lens of a large diameter (more than 30 mm) and is the super-low dispersion glass with the very high processing difficulty level. This is arranged in the neighborhood of the diaphragm and corrects spherical aberration. The G04 lens is arranged in front of the diaphragm, and the G15 lens is done behind of the diaphragm.

These arrangement are symmetric position against the iris location, and astigmatism
aberration and distortion are revised effectively. Precise and exceptional quality multi-coating is applied to the surfaces of the two front lens elements (G01 and G02) in first group and on elements though out the lens. This reduces reflections to control or eliminate image-degrading flare and ghosting.

As a result, the AT-X 24-70mm has a very neutral color balance, which is important to for a standard zoom lens in high level.


■ Excellent optics performance for full size format cameras

  • 3 glass molded aspherical elements and 3 SD super-low dispersion glass elements give maximum resolution, more even brightness to surrounding area,
    and high level distortion correction.
  • Optimized optical formulas produce exceptional contrast, color and outstanding images.
  • Designed a color balance by neutral coloring and pursued the special quality for the limit for the frequent use standard zoom lens.
  • Arranged 3 SD super-low distortion glass elements (G09, G10 and G14) with the strong positive power into the rear group and revise chromatic aberrations.
  • Processed a high quality multi-coat to jointed face of G1/G2 lens in front of group and reduce are and ghost.

■ Designed the mechanism with great importance to operability
  • Equipped SDM (Silent Drive-Module), reduce motor sound till the limit boundlessly.
  • The focus clutch mechanism gives the high operability, and a change of AF/MF is smoothly in every photography scene


Optical structure (Elements/Groups): 15E / 11G
Angle of view:84.20゜~ 34.49 ゜
Minimum focus distance (m): 0.38
Maximum macro magnication: 1 : 4.73
Minimum aperture: 22
Number of aperture diaphragms: 9
Filter size (mm): 82
Overall length (mm): 107.5
Maximum diameter (mm): 89.6
Weight (g): 1,010
Lens hood: BH-822

About Tokina

Part of Kenko Tokina Co. Ltd, Tokina has a optical manufacturing tradition that dates back over 60 years. Tokina specializes in high-quality lenses for todays digital single lens reflex (DSLR) cameras. This brand is known for speciality fast glass like the ATX-116 PRO DX, a top rated 11-16mm f/2.8 lens.


Tokina Dept. International Division
Kenko Tokina Co.,Ltd.