Sony FE 100-400mm f/4.5 GM OSS

Sony FE 100-400mm f/4.5 GM OSS

Meet Sony’s professional 100-400mm zoom with no compromises. With a constant f/4.5 aperture, four XD Linear Motors for up to 3x faster autofocus with 50% better focus tracking, and an internal zoom design weighing just 1,840g, this is the ideal lens for wildlife, sports, and photojournalism. Never miss a decisive moment again, from unpredictable birds to lightning-fast athletes.

Always the right exposure, at every focal length

The FE 100-400mm f/4.5 GM OSS is the only lens in its class with a constant f/4.5 aperture across the entire zoom range. That means no exposure shift while zooming, consistent shutter speeds when tracking fast-moving subjects, and soft bokeh throughout the zoom range from 100mm to 400mm. For sports photographers working in changing light conditions, or wildlife photographers who must react extremely quickly to an unexpected movement, the constant aperture is a crucial advantage over lenses with a variable zoom.

Never miss a decisive moment again

Four XD Linear Motors and advanced control algorithms deliver autofocus speeds up to three times higher than previous models, with around 50% better tracking performance. The floating focus groups are driven with extreme precision, keeping the subject sharply in focus even during unpredictable movements. Combined with the Sony Alpha 9 III, the lens supports AF tracking at shooting rates up to 120 fps, making it ideal for capturing birds in flight, sprinting athletes, or other fast action moments where there’s no room for maybe.

Shoot all day, without fatigue

The internal zoom means the lens length at 100mm stays the same as at 400mm, keeping the center of gravity constant and ensuring the lens remains perfectly balanced on a tripod or in hand. With a weight of around 1,840g, the lens is relatively light. For photographers working long days on location, both on a tripod and handheld, this means less fatigue and more freedom of movement. The internal design also prevents dust from being sucked in while zooming, which is essential when shooting outdoors in challenging conditions.

From 100mm to 800mm, without changing lenses

The lens is fully compatible with the Sony SEL14TC (1.4x) and SEL20TC (2.0x) teleconverters, extending the effective range to 140-560mm and 200-800mm respectively. Crucially, full G Master image quality is maintained when using teleconverters—something that is not the case with many other lenses. This effectively makes the FE 100-400mm F4.5 GM OSS a versatile system that adapts to a wide range of shooting situations with a single lens body, without needing to switch lenses and without missing valuable moments.

Built for the toughest conditions

For professionals working in demanding environments, the lens offers a built-in security lock suitable for use with a security cable in press areas, stadiums, and fixed shooting positions. All buttons and rings are fitted with seals for a robust dust- and moisture-resistant construction, so the lens continues to function reliably even in harsh weather conditions. In addition, the front element features a fluorine coating that repels contamination and is easy to clean, ensuring long-term durability and image quality.

Swap filters in seconds, without removing the lens

The lens features a rear drop-in filter option, allowing ND filters, polarizing filters, or other filter types to be swapped quickly and easily without having to remove the lens from the camera. For sports and wildlife photographers who need to switch quickly between situations with strongly changing light conditions, this is a significant practical advantage. A large front filter is impractical and expensive on a lens of this size; the drop-in solution provides a professional and affordable alternative that fits a fast on-location workflow.