Compact, lightweight standard zoom covers ultra-wide 20 mm to 70 mm. Redefines the standard zoom category with a focal length range that extends from ultra-wide 20 mm to a versatile 70 mm, all within a surprisingly compact and lightweight design. This lens is perfect for a wide range of shooting situations, from expansive landscapes to intimate portraits. The constant F4 aperture ensures consistent exposure and excellent depth-of-field control throughout the zoom range. Its advanced optical design includes three ED (Extra Low Dispersion), two AA (Advanced Aspherical), one ED (Extra Low Dispersion Aspherical) & one aspherical element, ensuring outstanding resolution and minimizing aberrations. Beautiful background bokeh is achieved with a 9-blade circular aperture, adding a professional touch to your images and videos.