Sigma 50mm f1.4 DG Art L-Mount

The fast 50mm F1.4 DG HSM Art standard lens delivers the highest imaging performance for a new era of superior image quality. Its excellent optical performance makes it the ultimate "always with you" lens.

This lens is a symbol of SIGMA quality and the ideal standard lens. It delivers superior performance and fulfills the concept of our Art product line to the highest degree. It provides immensely balanced images with a wonderful bokeh and sets a new standard for fast standard lenses.

Using all the experience and the latest design technologies drawn from past developments, it effectively corrects aberrations and achieves high resolution and amazing imaging performance, even at the edges of the image.

High resolution with a wonderful bokeh

While high resolution is desired for the focused subject, beautiful bokeh is desired outside the plane of focus for a smooth transition of sharpness. Aberrations such as sagittal coma and color distortion, which affect image quality, are effectively corrected. Even at open aperture, high-resolution reproduction is achieved without blurring. By reducing vignetting to a minimum and preventing colored fringing in front of and behind the focus point, a very natural bokeh is achieved.

Excellent sagittal coma correction

Ideally, a fast standard lens already exhibits high imaging performance over the entire image area at open aperture. Excellent sagittal coma correction is provided, for example, by the bare pressed aspherical glass lens elements. Due to the reduced distortion of point light sources at the image edges, it is perfectly suited for astrophotography and available light. Likewise, it achieves attractive bokeh for portraits and indoor photography.

Correction of longitudinal chromatic aberration

To counteract longitudinal chromatic aberration, which is difficult to correct even in image processing, SLD (Special Low Dispersion) glass elements are incorporated to ensure high image quality across the entire focus range. As a result, the lens achieves sharp and high-contrast image reproduction.

Minimized distortion

It is not possible to compensate for distortion only by changing the aperture values. Thus, the development phase of the lens was already decisive in minimizing distortion. In the "SIGMA 50mm F1.4 DG HSM", each glass element has been precisely positioned for optimized force distribution to reduce distortion to a minimum.

High edge-to-edge illumination

The lens provides very uniform illumination even in the peripheral areas of the image, which can otherwise be a problem with large diameter optical systems. The positioning of large elements in the front lens group improved efficiency at open aperture. This helps minimize vignetting and provides the utmost clarity across the entire image field.

Reflection- and ghost-eliminating design

From the beginning of the lens design process, susceptibility to reflections and ghosting is studied to achieve an optical design that is resistant to even strong backlighting. Super Multi-Layer Coating (SML) reduces flare and ghosting and delivers sharp, high-contrast images, even when backlit.

Close focusing distance of 40cm

The lens incorporates a floating system that adjusts the distances between lens groups during focusing, minimizing the required lens movements. This enables a close focus distance of 40cm and a maximum magnification of 1:5.6. Similarly, fewer aberrations at each shooting distance are the result, allowing the lens to deliver high imaging performance across the entire focus range.

Fast focusing

The Hyper Sonic Motor (HSM) provides quiet and very fast AF. With the improved AF algorithm, smoother AF is achieved. It can also be manually intervened at any time, allowing sensitive focus adjustment by simply turning the focus ring.

Round aperture

The near-round aperture consists of 9 aperture blades and provides a very pleasing bokeh outside the plane of focus of the image.

Brass bayonet

The lens is equipped with a solid and precise brass bayonet. The special treatment of the surface to strengthen the strength allows for long-lasting use.