The Sigma EX DG 24-70mm F2.8 Autofocus Macro Lens is specifically designed for Nikon DSLRs, offering a maximum aperture of F2.8 and a focal length range of 24-70mm. This lens is part of Sigma's EX DG Macro series, perfect for capturing detailed close-up shots with its zoom functionality. With a Nikon F mount and compatible with 82mm filters, it is a versatile and high-quality lens for photographers looking to explore the world of macro photography on their DSLR cameras.