Sigma 18-35 EF stands out as a prime example within the Art series zoom lenses, spanning from wide-angle to standard focal lengths. Setting itself apart, this lens boasts an impressively bright f/1.8 constant maximum aperture, ideal for challenging lighting conditions and delivering remarkable depth of field control throughout its zoom range. Its optical configuration integrates a blend of SLD and aspherical elements, effectively curbing aberrations, color fringing, and distortion to ensure high clarity and sharpness. Additionally, a Super Multi-Layer Coating is applied to minimize lens flare and ghosting, enhancing contrast and color fidelity. Complementing its optical prowess, this 18-35mm lens features an advanced Hyper Sonic Motor and internal focusing mechanism, ensuring swift, silent, and precise autofocus performance.