Ultra-Wide for Dynamic Spatial Expression This compact 12-24 mm ultra-wide-angle zoom lens features the shortest focal lengths available in any full-frame E-mount lens, with stunning corner-to-corner G Lens resolution at all apertures. It is an excellent choice for dynamic landscape and architecture photography. Outstanding mobility and quiet, fast, precise auto focus make it ideal for shooting movies as well as stills. Fingertip control and high reliability A customizable focus hold button provides extra control versatility, while dust and moisture resistant design means reliable operation even in challenging conditions. High resolution at ultra-wide angles Covering the widest range available in any full-frame E-mount lens, the FE 12-24mm F4 G zoom offers unprecedented expressive potential for landscapes, cityscapes, architecture and other expansive subjects. Refined ultra-wide-angle optics capture sweeping scenes with dynamic perspectives plus outstanding resolution and clarity. Excellent corner-to-corner resolution Four aspherical elements in an innovative optical design effectively suppress optical aberrations that can be problematic in wide-angle lenses. This remarkable lens achieves excellent resolution that is fully consistent with the G Lens concept throughout its zoom range. Super ED glass improves resolution and contrast One Super ED (Extra-low Dispersion) glass element and three ED glass elements are strategically deployed to minimize chromatic aberration. Effective reduction of chromatic aberration contributes to improved sharpness and clarity throughout the image area. Clarity and contrast in any light Sony's original Nano AR Coating suppresses spurious reflections that can cause flare and ghosting in backlit and other challenging lighting situations, for consistently high contrast and clarity. Freedom from flare over a wide range of incident light angles provides greater framing and composing flexibility. (1. Nano AR Coating / 2. Glass / 3. Transmitted light) Compact, lightweight and mobile A refined optical design significantly reduces the overall length of the lens barrel as well as the diameter of the front element size while maintaining the highest possible optical performance at all focal lengths and aperture settings. Compact dimensions and low 20-ounce (565-gram) weight make this lens ideal wherever portability and mobility are required. Fast, quiet AF for stills and movies While autofocus speed and precision are essential to quickly capture and reliably track the subject, quiet operation is a must for movie recording. This lens features an advanced inner-focus mechanism driven by Sony's Direct Drive SSM (DDSSM) system for fast, accurate AF lock-on as well as smooth, quiet operation. Advantages for movie recording With a constant F4 maximum aperture throughout the zoom range this lens makes it possible to achieve consistent exposure. Advanced AF with outstanding speed and precision contributes to reliable subject tracking at wide angles for impressive movie perspectives. Smooth, versatile operation A customizable focus hold button that can be assigned other functions adds an extra margin fingertip control and an AF/MF switch sets the lens's operating mode to suit the situation. Manual mode focusing is fast and responsive with almost unnoticeable lag. High reliability in harsh conditions The overall design of this lens is dust and moisture resistant for extra protection and reliable operation in challenging environments. Shoot with confidence in light rain or windy conditions. Integrated lens hood A built-in lens hood effectively blocks incident light that might cause flare and ghosting, maintaining optimum clarity and contrast even at the lens's widest angles. The supplied lens cap slips right over the built-in hood. Lens Configuration Impeccable Sony G Lens design emphasizes a graceful balance between high resolution and gorgeous background bokeh that can enhance the artist's vision. MTF Chart MTF (Modulation Transfer Function) describes how well a lens can reproduce fine details, measured as the degree of contrast achieved between finely spaced lines.