Sigma SIGMA Sigma Nikon F Mount Lens DC HSM Zoom Standard Art SLR Dedicated 50-100mm F1.8 APS-C

It covers a focal range equivalent to 85mm F1.8, 105mm F1.8, and 135mm F1.8 (35mm format equivalent), which is more than three single focal length lenses, making it suitable for portrait photography that takes advantage of the blurred background. Three pieces of FLD (“F” Low Dispersion) glass, one piece of SLD (Special Low Dispersion) glass, three pieces of high refractive index SLD glass, and one piece of high refractive index high dispersion glass are appropriately arranged to thoroughly correct axial chromatic aberration and lateral chromatic aberration. By using one or more pieces of low-dispersion glass in each group, high image quality is achieved over the entire zoom and focus range. Adopts an inner focus and inner zoom method that does not change the overall length. Nikon F mount 50-100mm F1.8 zoom telephoto SLR APS-C