4K Video Support for High-Resolution RecordingWith video support any user has everything they need for recording with their LUMIX camera. Not only does it perform smooth aperture changes so there are no sudden jumps in exposure, it also boasts a silent design for enhanced capture of the scene’s audio. What’s more, the stunning AF performance of this lens records excellent 4K video, where precise focusing is essential. | Nano Surface Coating Reduces ReflectionsPut an end to unwanted ghosting and flaring – the Nano Surface Coating has been applied to lenses within the system. This special, ultra-thin coating was developed originally by Panasonic to reduce bothersome reflections across the entire light spectrum. The result: crystal-clear pictures even if you’re photographing a light source in the dark. | High-Quality Lens Construction for Uniform Image QualityAspherical (ASPH) lenses reduce size and weight, effectively preventing spherical and distortion aberration. Ultra-high refractive index (UHR) lenses improve optical performance, reduce size and weight, and achieve uniform image quality from the center to the edges of the image. Ultra Extra-Low Dispersion (UED) lenses correct chromatic aberration rendering sharp, high-contrast images with clear colors from corner to corner. | MTF Chart Details Optical PerformanceFor lenses that are capable of compensating distortion, the horizontal axis of the MTF shows the distance from the center of the corrected image. |