The Lumix G X Vario 12-35mm features an aperture of f/2.8 over the entire zoom range. The Panasonic POWER O.I.S. is built-in and compensates for camera shake better than their previous MEGA O.I.S. When you combine this with its fantastic AF performance, the H-HSA12035 is an excellent choice for recording 4K video.
Built aspherical to reduce size and weight, it was also constructed to be splash / dust / and freeze-proof. Panasonic also imbued the 12-35mm f/2.8 II with its own Nano Surface Coating — to cut down ghosting and flaring.