12-40mm lens provides an equivalent field in 35mm of 24-80mm view, ranging from wide-angle to portrait-length perspectives.
Constant f/2.8 maximum aperture enables consistent low-light performance and selective focus control throughout the zoom range.
High-speed AF linear motor system, supported by MSC (Film and Still Image Compatible), provides fast, smooth access and quiet focusing performance.
Manual clutch permissions efficient focus and intuitive switching between automatic and manual focus control.
The construction of the aspherical lens integrates an ED (Extra Low Dispersion) element, two aspherical elements, one DSA (Dual Super Aspherical) element, two Extra Low Dispersion elements, one High Definition element, and two HR (High Refractive Index) elements into its design to minimize aberrations, distortion, and chromatic aberration throughout the zoom range while contributing to the sharpness of the overall image, clarity and fidelity.
Seven-blade circular diaphragm works to produce a quality out-of-focus aesthetic that is well suited to shallow depth of field images.
Dust, freeze, and drip-proof design ensure the lens' performance in harsh and harsh conditions.