SIGMA AF 24-70MM F/2.8 DG DN II (A) F/SE

The optical design of the lens includes 6 FLD glass elements, 2 SLD glass elements, and 5 aspherical lens elements. This thoroughly suppress various aberrations throughout the entire zoom range. In particular, sagittal coma flare has been well controlled to achieve consistently high resolution all the way to the periphery of the image. By also effectively correcting lateral chromatic aberration, high resolution, beautifully rendered images can be achieved, free from color fringing can be achieved.

The use of 5 high-precision aspherical lenses enables both high optical performance with minimal aberration correction. This is combined with a compact optical design. The SIGMA’s only manufacturing base, the Aizu factory’s ultra-high-precision aspherical molding technology makes it possible to produce the thin, highly polarized aspherical lenses that are essential for the construction of this lens. This has brought about a higher degree of freedom in optical design.

The lens has excellent close-up capability with a minimum focusing distance of 17cm / 6.7in. At the wide end and a maximum magnification ratio of 1:2.7. This is useful when composing close-up shots of a subject. Or when shooting in tight spaces where it is difficult to get a good distance from the subject.

^{* Be extremely careful that the front lens element does not hit the subject when photographing. Remove the lens hood when photographing at the minimum focusing distance at the wide-angle end.}

Flare and ghosting, which reduce image quality, have been largely eliminated using advanced simulation technology. Ensuring the lens renders rich, high-contrast results in all conditions. In addition, Nano Porous Coating and Super Multi-Layer Coating have been applied to help suppress flare and ghosting to the utmost degree. High backlight resistance enables clear and sharp images under any lighting conditions.