The 24mm F1.4 GM features an advanced optical design, including two XA (Extreme Aspherical) elements and three ED (Extra-low Dispersion) glass elements that delivering outstanding corner-to-corner resolution, even at a wide F1.4 aperture. An 11-blade circular aperture mechanism creates beautiful bokeh that is a hallmark of the G Master series. Fast focusing is attained through the DDSSM (Direct Drive SSM) focus drive system. This lens sports class-leading size and weight, providing great handling and mobility.
Compact G Master™ wide prime lens w/ stunning wide-open resolution
The FE 24mm F1.4 GM realizes consistently high resolution across the entire frame and delivers soft and natural bokeh - a signature feature of Sony’s G Master lens series. It also boasts a new optical design comprised of 10 groups with 13 elements, including two XA (extreme aspherical) and three ED (Extra-low Dispersion) elements. The incorporation of two XA elements ensures that point light sources can be accurately reproduced, making the FE 24mm F1.4 GM a compelling proposition for astrophotography. For impressive clarity, Sony’s unique Nano AR Coating is applied to reduce lens flare and ghosting, even in landscape shots where the position of the sun can be problematic with a normal lens.
11-blade circular aperture contributes to gorgeous bokeh
The 11-blade circular aperture maximizes the beauty of this large-aperture prime-lens, contributing to impressive images in which the subject stands out against a smoothly defocused foreground and background, as well as perfectly round points of defocused light. Conventional aperture blades have flat sides that create unappealing, polygonal-shaped defocused points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result.
Direct Drive SSM (DDSSM) for fast, quiet, precise focusing
The 24mm F1.4 GM lens supports hybrid autofocus for both contrast and focal-plane phase detection AF. It has a high-precision Direct Drive Super Sonic Motor (DDSSM) system that ensures exceptionally fast, quiet and accurate AF performance. The precision internal focus mechanism aids in AF speed by moving only the middle groups of the optical system and effectively minimizing focus breathing, while keeping the lens size compact and lightweight. In addition to being the ideal wide prime lens for stills, it is also exceptionally suited for video with a linear motor that takes on the vital role of ‘wobbling’ to providing high-speed actuation for the contrast AF detection system, for smooth, continuous AF.
Two XA (Extreme Aspherical) lens element
The 24mm F1.4 GM employs two XA (Extreme Aspherical) lens element, one of which is the front lens. This large-diameter front XA lens element features a new optical design, maximizing the advantages of the short mirrorless camera flange distance, and effectively suppresses various aberrations, especially the peripheral area in the frame and sagittal flare. Two XA elements compensate for coma, field curvature, and astigmatism that can be problems with wide-angle large-aperture optics. This also contributes to the compact and lightweight design.
Three ED (Extra-low dispersion) glass elements
Three ED (Extra-low Dispersion) glass elements take axial chromatic aberration and chromatic aberration due to differences in magnification out of the picture, maximizing resolution and bokeh while leaving precisely rendered edges with no fringing or unnatural colouration, while significantly reducing flare and ghosting.
Nano AR coating suppresses reflections, flare and ghosting
Sony’s original Nano AR Coating technology minimizes flare and ghosting, for dynamic range that achieves lifelike detail and gradation with advanced camera sensors. This precisely defined regular nano-structure allows accurate light transmission, contributing to high-quality images, even more so than with lenses that use coatings with an irregular nano-structure. The reflection suppression characteristic of the Nano AR Coating is superior to conventional anti-reflective coatings, providing a notable improvement in clarity, contrast, and overall image quality.
Astrophotography Sagittal flare suppression
Sagittal flare is a phenomenon that results in an unnatural spreading of point light sources that appears somewhat like a bird spreading its wings and becomes more pronounced towards the image periphery. It is most common in large-aperture lenses. The 24mm F1.4 GM incorporates a new optical design, including two XA lens elements, to effectively suppress and correct for sagittal flare, making this lens ideal for night sky and astrophotography.
