The nikon 17 35mm f28 d af s if is a high performance wide angle zoom lens with a bright f28 aperture ultra quiet silent wave motor swm and fast autofocus operation this lens covers everything from landscapes and architectural work to portrait and travel photography its maximum f28 aperture ensures exceptional clarity even in difficult lighting situations and makes it an ideal lens for handheld candid photography this lens delivers stunning results for both dx and fx format nikon d