Overview of Sony FE 50-150mm F2 GM Telephoto Zoom Lens
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.
From an optical perspective, the FE 50-150mm F2 GM employs an internal construction comprising two extreme aspherical (XA) elements, two Super extra-low dispersion (Super ED) glass elements, and three additional ED elements. These components are designed to control optical aberrations, such as chromatic and spherical aberration, resulting in consistently sharp and high-contrast images throughout the zoom range. A floating focus mechanism allows a close minimum focusing distance of 0.4 meters at the wide end, yielding a maximum magnification ratio of 0.20, useful for moderate close-up photography.
The lens features an 11-blade circular aperture diaphragm aimed at producing a smooth out-of-focus background (bokeh), particularly at the constant F2 aperture setting. Given this attribute, the lens is potentially suitable for photographers specializing in portraits, weddings, or events, where subject isolation via shallow depth of field is desirable. The inclusion of Sony’s proprietary “Nano AR Coating II” is intended to minimize reflections and lens flare, thereby improving image clarity in challenging lighting situations, such as backlit environments.
Physically, the FE 50-150mm F2 GM measures approximately 200 mm (7-7/8 inches) in length and weighs about 1,340 grams (47.3 ounces). The lens employs an internal zoom mechanism, meaning its external dimensions remain constant irrespective of focal length adjustments, aiding balance when used handheld or mounted on stabilization equipment such as gimbals.
In terms of autofocus capability, the FE 50-150mm F2 GM is equipped with four XD (extreme dynamic) linear motors, combined with Sony’s updated autofocus algorithms. This configuration promises rapid, accurate, and quiet autofocus performance, compatible with high-speed continuous shooting scenarios. Specifically, Sony indicates compatibility with the Alpha 9 III’s continuous shooting capabilities of up to 120 frames per second with full autofocus and auto-exposure tracking, making it potentially suitable for fast-paced action photography, such as indoor sports.
For videography, the lens design includes provisions to minimize focus breathing—a common issue affecting the angle of view when adjusting focus distances. It supports Sony’s camera-based Breathing Compensation feature, available on select Alpha camera models. Additionally, the lens design incorporates Linear Response Manual Focus (MF) control, allowing precise manual focus adjustments beneficial to video recording. Quiet operation from the autofocus motors further reduces unwanted noise captured during video recording.
Durability considerations include a robust dust- and moisture-resistant construction, along with a fluorine-coated front element intended to facilitate easier cleaning and reduce contamination risks in challenging conditions.
The FE 50-150mm F2 GM is slated for release in May 2025, priced at approximately $3,899 USD ($5,499 CAD). Distribution will occur directly through Sony and authorized North American dealers. The lens presents itself as a single-lens alternative potentially replacing multiple prime lenses within the 50-150mm focal range, primarily appealing to professional photographers and videographers requiring a versatile telephoto zoom solution with consistent optical performance.