Sony Unveils 12–24mm f/2.8 High-End G Master Lens

Sony has announced a new addition to its G Master series of lenses designed for full frame: the 12–24mm f/2.8 GM. The lens is a faster high-end version of the company’s 12–24mm f/4 G, and as such could potentially be an excellent lens for underwater photography—notwithstanding the expense of the dome port you’d need to use.

Weighing in at 1.9lb, the dust and moisture-sealed lens features a nine-blade aperture and 17 elements in 14 groups, including three XA (Extreme Aspherical) elements, two Super ED (Extra-low Dispersion) and three ED elements to control distortion and chromatic aberration. Flare and ghosting are reduced by the newly developed Nano AR Coating II on the front element. The minimum focus distance is 11 inches (28cm). Zoom is nearly all internal, with just a…

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