The Sigma 24mm f/1.4 DG HSM lens for Nikon provides exceptional performance for a wide range of subjects, from cityscapes and mountain ranges to the night sky. It is ideal for low-light indoor photography or scenes requiring a smooth bokeh effect. This lens features HSM for quiet, high-speed autofocus and full-time manual focus override. The Sigma 24mm 1.4 DG HSM Art is a cutting-edge wide-angle prime lens designed for Full Frame cameras, also compatible with APS-C sensors. Building on over 50 years of lens-making expertise, the 24mm 1.4 Art aims to set a new standard for fast-aperture wide-angle prime lenses. Its advanced optical design ensures the highest image quality, with meticulous attention to edge-to-edge performance. The optimized power layout places aspherical lens elements at the rear and adjusts the angle of incidence of light sources, resulting in excellent performance even at wide-open apertures. Constructed with premium FLD and SLD glass elements, this lens minimizes aberrations and distortion, common issues in many wide-angle lenses. Its class-leading performance makes it suitable for wedding photography, landscape photography, videography, astrophotography, and low-light/indoor event photography. Consistent with all Global Vision lines, the 24mm is tested using Sigma's proprietary “A1” measuring system to ensure the highest operational standards. The Sigma 24mm Art is compatible with the USB dock for updates and customization, and also with the Mount Conversion Service. Art Lens: Engineered for those who view photography as self-expression, Sigma's Art line delivers sophisticated optical performance and ample expressive power to realize your artistic vision. DG - DG for Digital: Sigma's DG lenses are specifically designed for optimal performance on full-frame digital SLRs. They also maximize the capabilities of 35mm SLR cameras and APS-C DSLRs. Sigma ensures incredible image clarity and smoothness by comprehensively correcting chromatic aberrations, particularly eliminating color fringing common with lateral chromatic aberration, which is amplified by high resolutions in digital photography. DG lenses offer exceptionally high contrast with subtle gradations in tone and color. Super Multi-Layer Coating and Sigma's optimized optical design reduce reflections between the image sensor and lens surfaces. The large image circles of DG lenses guarantee sufficient peripheral illumination, preventing vignetting. H HSM - Quiet and Fast Autofocusing: HSM lenses utilize an ultrasonic wave-powered motor for quiet, high-speed autofocus. Enjoy high performance with low noise in various shooting situations. Minimized Sagittal Coma Flare: Sagittal coma flare, where point light sources appear as streaks instead of points, particularly affects large-diameter lenses. By positioning aspherical lens elements towards the rear of the 24mm F1.4 DG HSM | Art, the angle of incidence of light is adjusted for optimal power distribution, delivering outstanding image quality even at wide-open apertures. By minimizing the streaking of point light sources towards the image edges, this lens is a valuable tool for photographing celestial bodies and night scenes. Flare and Ghosting Reduction: From the initial lens design stages, flare and ghosting are measured to create an optical design resistant to strong incident light sources like backlighting. SIGMA’s Super Multi-Layer Coating reduces flare and ghosting, enabling photographers to capture sharp, high-contrast images even in backlit conditions. The included lens hood blocks extraneous light that could negatively impact rendering performance.