Part of the high-performance ' Art Series', the Sigma 3.5cm f/1.4 DG HSM A Standard Prime Lens provides incredible artistic expression with superb optics, for professional & serious amateur photographers. Advanced optical design As the first release of Sigma's Art category, the 3.5cm f/1.4 DG HSM A is the most complex in its class. Its 13 element, 11 group construction
Includes:: four elements made from Super-Low Dispersion (SLD) glass, 'F' Low Dispersion (FLD) glass, which has performance equal to fluorite & two aspheric elements. This helps to minimize & correct both the chromatic aberration of magnification & axial chromatic aberration to achieve ultra-high quality images. Large aperture Sigma has a reputation for producing high-performance lenses by incorporating the latest optical techniques. The f/1.4 DG HSM A is the fourth lens of its kind that achieves extraordinary expressive power with a maximum aperture of f/1.4 so your photography benefits from excellent brightness even in the poorest light conditions. Hyper Sonic Motor The HSM (Hyper Sonic Motor) ensures fast & quiet autofocus with full-time manual override. The enhanced AF algorithm gives you smoother autofocus which can be overridden anytime by rotating the focus ring. This drives a floating inner focus system that effectively compensates for astigmatic & spherical aberration, designed to maintain high optical performance for all subject distances, including extreme close-up photos. Reduced flare & ghosting Super Multi-Layer Coating is used to reduce flare & ghosting. Combined with an optical design engineered to resist strong incident light, the f/1.4 DG HSM A provides sharp, high contrast images even in backlit conditions. Blur effect The diaphragm effectively uses 9 rounded blades to create an attractive bokeh effect in the out of focus areas of the image. As a result, you can achieve beautifully expressive photos with artistic peripheral distortion. Meet the demand of high-end photography. With excellent image quality, professional-grade optics & flawless operation, the Sigma 3.5cm f/1.4 DG HSM A Standard Prime Lens delivers on performance at an ultra competitive price.