Compared to the predecessor model Sigma 24-70mm F2. 8 DG DN - Art, the Sigma 24-70mm F2. 8 DG DN II - Art has an improved resolving power over the entire zoom range. It also benefits from functional improvements such as the added aperture ring and the high-speed autofocus with the HLA drive (High-Response Linear Actuator). The Sigma 24-70mm F2. 8 DG DN II - Art is approx. 7% smaller and 10% lighter than its predecessor. The ease of use has been improved with an aperture ring and two AFL buttons. Despite the more compact design and the improved features, the lens offers high processing quality. With an uncompromisingly precise and robust construction, as you would expect from a professional photographic tool.
While the number of lens elements used has remained the same compared to the previous model, the overall length has been reduced thanks to the modern optical design. In addition, the more efficient mechanical design has resulted in a lens with a maximum diameter of 87.8 mm, a length of 120.2 mm and a weight of 745g (L-mount version). The robust internal structure and the use of high-precision metal parts ensure high stability and durability in professional use. Many demanding users appreciate the ability to set the aperture directly on the aperture ring of the lens.
Those who prefer to set the aperture on the camera body can use the aperture ring's lock function and are protected against accidental adjustment. The optical design of the lens comprises 6 FLD and 2 SLD glass elements. In addition, 5 aspherical lens elements are used. Aberrations are thus reliably suppressed over the entire zoom range. Sagittal coma flares in particular are well controlled in order to achieve a consistently high resolution right up to the periphery of the image. The effective correction of lateral chromatic aberration means that high-resolution images free of colour fringing can be achieved.
