The Sony FE 24-70mm f/2.8 GM II is a full-frame standard zoom lens with a constant f/2.8 aperture. It is part of Sony's G Master line and is built for both stills and movies. It weighs 695 grams, which is 191 grams less than the previous model. Its length is 16 mm shorter, and its overall volume is about 18% smaller.
The optics include two XA (extreme aspherical) elements, two ED (extra-low dispersion) glass elements, two Super ED glass elements and a floating focus mechanism. These control chromatic aberration, astigmatism, distortion and coma at all zoom and aperture settings. Nano AR Coating II reduces flare and ghosting. An 11-blade aperture unit and XA elements made with 0.01-micron precision suppress onion ring bokeh.
Four XD (extreme dynamic) Linear Motors drive the autofocus, with about 2x better tracking performance while zooming than the previous model. With a compatible body, it can shoot at up to 30 frames per second. For movies, the design reduces image shifts and angle-of-view variations. The lens has independent focus and aperture rings, and Linear Response MF gives a direct, linear focus ring response in manual focus.
- Lens type
- Full-frame standard zoom, constant aperture
- Focal length
- 24-70 mm
- Maximum aperture
- f/2.8
- Weight
- 695 g
- Aperture blades
- 11
- Min. focus distance
- 0.21 m at 24 mm; 0.30 m at 70 mm
- Max. magnification
- 0.32x
- Optical elements
- 2 XA, 2 ED, 2 Super ED
- Coating
- Nano AR Coating II
- Autofocus
- 4 XD Linear Motors, floating focus mechanism