Sigma is known for making high-quality lenses, and they’ve just added another world’s first to their lineup: the Sigma 28-45mm f/1.8 DG DN Art lens. This new full frame lens not only delivers a constant f/1.8 aperture throughout the entire zoom range, but it also delivers incredible sharpness and clarity throughout, similar to a high-quality prime lens. This versatile zoom is perfect for a variety of shooting scenarios.