Sony Electronics recently announced the introduction of the FE 50-150mm F2 GM lens, model SEL50150GM, characterized primarily by its constant maximum aperture of F2 across a telephoto zoom range. This lens represents a unique addition to the current range of telephoto zoom lenses available for the Sony Alpha camera system, specifically due to its combination of focal lengths traditionally covered by prime lenses (50mm, 85mm, and 135mm) into a single zoom lens.