The SEL1635GM is the Sony FE 16–35mm F2.8 GM, a professional G Master wide-angle zoom lens for Sony full-frame E-mount cameras. It covers a versatile 16–35mm focal range, making it ideal for landscape, architecture, travel, interior, and cinematic video work. The lens features a constant F2.8 aperture, which helps maintain bright exposure and strong background separation throughout the zoom range. As part of Sony’s premium GM lineup, it delivers exceptional sharpness, low distortion, fast autofocus, and beautiful bokeh, thanks to advanced XA and ED glass elements. It is also dust- and moisture-resistant, making it reliable for outdoor and professional use.