G-series lenses are Minolta’s high-performance class optics. They have the best specifications, feature special advanced technology, and offer the best image quality of all Minolta lenses. G-series lenses are designed to meet the high expectations of the most demanding professional. The quality of the image they produce is among the finest in the industry. Each G-series lens incorporates one or more of the following features: circular aperture, double floating and floating-focusing systems, Internal focus, Anomalous Dispersion (AD) glass, aspheric elements, and focus-hold buttons.