Sony FE 24-70mm f/2.8 GM Full-Frame Autofocus Lens for E-Mount, Black {82} SEL2470GM

Sony's 24-70mm f/2.8 GM: the full-frame standard zoom built to resolution benchmarks most lenses ignore.

Sony set a specific optical target for G Master glass: 50 line pairs per millimeter resolving power, even at f/2.8. The 24-70mm GM hits that mark through an 18-element, 13-group design that includes an XA (extreme aspherical) element ground to sub-0.01-micron surface precision. That kind of manufacturing tolerance matters when you're shooting full-frame bodies above 40 megapixels and need a zoom that won't become the weakest link in the chain.

The constant f/2.8 aperture holds steady across the entire 84° to 34° angle-of-view range, so exposure doesn't shift when you zoom through a scene. Minimum focus distance lands at 38 cm, short enough to work closer than typical for a lens of this focal range. Nano AR coating keeps contrast intact in backlit situations where lesser lenses would wash out, and ED and Super ED glass elements handle chromatic aberration at the edges without requiring heavy post-processing to clean up fringing.

At 886 grams with an 82mm filter thread, this is a working professional's lens built around dust and moisture resistance, a zoom lock for transport, and a focus hold button that can be remapped through the camera's custom settings. Sony E-mount photographers who need one lens that functions from environmental portraits to editorial coverage will find the optical performance matches what the specs promise.

Who It's For

Wedding photographers shooting under mixed light benefit from the f/2.8 aperture holding constant at every focal length, giving consistent exposures during fast-moving ceremonies without touching the dial. Photojournalists and documentary shooters working close to subjects can close the gap to 38 cm without switching lenses. Portrait and commercial photographers using high-resolution Sony bodies like the A7R series will see the 50 line pairs/mm resolving power translate directly into usable detail in large prints and tight crops. Event and travel photographers who need a single lens from 24mm wide-room coverage to 70mm head shots will find the internal focus design keeps filter orientation fixed throughout.

Key Features

• 24-70mm f/2.8 constant aperture with full-frame G Master optics
• XA extreme aspherical element with sub-0.01-micron surface precision
• 18 elements in 13 groups engineered for 50 line pairs/mm resolving power
• Nano AR coating minimizes flare and ghosting in backlit scenes
• ED and Super ED glass elements reduce chromatic aberration
• 38 cm minimum focus distance with internal focus design
• Dust and moisture-resistant mount seal with zoom lock
• Direct Drive SSM autofocus with AF/MF switch and focus hold button

FAQ

Does the f/2.8 aperture stay constant across the zoom range?

Yes. The constant f/2.8 maximum aperture holds steady from 24mm to 70mm, so exposure and depth of field don't shift when you zoom through a scene.

What makes the 50 line pairs/mm resolving power claim credible?

Sony designed the lens around that optical target using an XA (extreme aspherical) element ground to sub-0.01-micron surface precision, paired with ED and Super ED glass. That manufacturing tolerance directly addresses the demands of 40+ megapixel full-frame bodies.

How close can you focus with this lens?

Minimum focus distance is 38 cm (1.25 feet), which is shorter than most standard zooms in this class. Internal focus design keeps the lens length stable and the filter thread stationary during focusing.

Is this lens sealed against dust and moisture?

Yes. Sony added a lens mount seal and rubberized rings designed for low-temperature operation. The zoom lock prevents unwanted extension during transport, though it's not a fully weather-sealed lens like some telephoto primes.

What's the weight and filter size?

886 grams with an 82mm filter thread. Size and weight are reasonable for a constant f/2.8 standard zoom built to G Master tolerances.

Can you switch between autofocus and manual focus quickly?

An AF/MF switch on the lens barrel lets you toggle instantly. A focus hold button locks focus at your chosen distance and can be remapped through camera custom settings for faster workflow control.