Unique Wide-Angle to Normal-Range Zoom. The Panasonic Leica 10-25mm f/1.7 ASPH DG Vario-Summilux’s 20-50mm equivalent focal length range suits a broad range of shooting applications, while the fast f/1.7 constant maximum aperture gives you excellent depth-of-field control and low-light performance. Its 11-inch minimum focusing distance and 0.14x maximum magnification make it great for capturing close-up subjects.

Advanced Optical Design. The twelve-group/seventeen-element optical formula includes three aspherical elements, four extra-low dispersion elements, and one ultra high-refractive index element to increase clarity and sharpness while reducing chromatic aberrations and distortion.

High-Speed Autofocus System. The autofocus motor provides fast, accurate, nearly silent performance for still and video use. This autofocus system is compatible with Lumix cameras’ high-speed contrast-detection autofocus systems for speeds up to 240 fps. A clutch-focus mechanism lets you easily and quickly switch between autofocus and manual focusing.

High-Quality Build. The 10-25mm’s high-quality splash-, dust-, and freezeproof metal build gives you peace of mind when shooting in adverse conditions. Its physical aperture ring has a stepless, de-clicked design for smooth, silent aperture switching, making it great for video use.