The LUMIX S PRO 24-70mm F2.8 (S-E2470) is a large-aperture standard zoom lens that boasts high descriptive performance across the entire zoom range. The optical performance of this LUMIX S PRO lens is remarkably high to clear stringent LEICA standards. Ensuring versatile use for landscapes, snaps and portraits with its 24-70mm focal length, the LUMIX S PRO 24-70mm F2.8 features stunningly high resolution and high contrast at each focal length point. The full-range F2.8 high-speed aperture provides smooth defocus gradation from the focus peak to the neighboring area of the image to achieve a beautiful bokeh effect as well as a rich perspective. Comprising 18 lenses in 16 groups, the use of 3 aspherical lenses and 4 ED (Extra-low Dispersion) lenses effectively suppresses both axial chromatic aberration and chromatic aberration of magnification. Astigmatism is also corrected with these aspherical lenses, achieving high resolving performance. Furthermore, a UHR (Ultra-High Refractive Index) lens achieves uniform image quality from the center to edges of the image while contributing to downsizing of the lens unit. A double focus system combining a linear motor and a stepping motor achieves sensor drive at a maximum speed of 480 fps. This realizes fast, high-precision AF to ensure that a photo opportunity is never missed. Adoption of a focus clutch mechanism enables instant AF/MF switching and accurate manual focusing. The LUMIX S PRO 24-70mm F2.8 also excels in video recording performance with a mechanism that suppresses focus breathing, which was a fatal problem in all interchangeable lenses designed for still image photography. The rugged dust/splash-resistant design withstands use under harsh conditions even at 10 degrees below zero for high mobility. The filter diameter is 82 mm, with an 11-blade circular aperture diaphragm.