The Sony E-mount 24mm f/3.5 DG DN Contemporary Lens, from Sigma, is a versatile and highly compact lens well-suited to a variety of shooting tasks. Its sleek profile makes it ideal for walkaround shooting, especially for hiking or travel landscapes, as well as street and reportage applications. Its optical design features both aspherical and low-dispersion glass elements, which suppress a variety of aberrations and distortions for well-controlled and accurate rendering. Also, a Super Multi-Layer Coating helps to reduce ghosting and flare for improved color fidelity and contrast. As an I Series lens, too, this lens features a manual aperture ring and all-metal barrel constriction for enhanced tactility. Additionally, there is a rounded seven-blade diaphragm for smooth bokeh quality and the lens housing is also weather-sealed to suit working in inclement conditions. As part of the Contemporary line within Sigma's Global Vision series, this lens is designed to achieve a balance between convenience and performance and meshes a compact, lightweight build and versatile handling with notable optical attributes. Ultra-wide-angle 24mm lens is designed for full-frame Sony E-mount mirrorless cameras, however, it can also be used with APS-C models where it provides a 36mm equivalent focal length. One Special Low Dispersion (SLD) element markedly reduces chromatic aberrations and color fringing for improved clarity and color accuracy. A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions. The integrated stepping motor realizes smooth and quiet autofocus, which is further complemented by an internal focusing design to promote greater responsiveness. The rounded seven-blade diaphragm contributes to a smooth and pleasing bokeh quality.