Sony has unveiled the FE 12-24mm F/2.8 GM Lens. Advertised as the “world’s widest full-frame zoom with a constant f/2.8 aperture”, the GM is a lens which will definitely not be easy on your pocket
Sony calls the new lens as the ideal landscape and astrophotography, architecture lens, and even for “active sports shooters who want to capture ultra-wide perspectives.”
FE 12-24mm F/2.8 GM Lens Specifications
FE 12-24mm F/2.8 GM Lens Configuration
G Master series lenses take imaging and expression to previously unattainable levels with a stunning blend of extremely high resolution and softly dissolving background bokeh
 Extreme aspherical lens (XA lens)  Aspherical lens  Super ED glass  ED (extra-low dispersion) glass
MTF (Modulation Transfer Function) describes how well a lens can reproduce fine details, measured as the degree of contrast achieved between finely spaced lines.
 At 12 mm / Max. aperture  At 12 mm / F8 aperture
 At 24 mm / Max. aperture  At 24 mm / F8 aperture
 Contrast (%)  Distance from optical center of lens (mm)
 Spatial frequency  10 line pairs / mm  30 line pairs / mm
 Radial values  Tangential values
|Lens type||Zoom lens|
|Max Format size||35mm FF|
|Focal length||12–24 mm|
|Lens mount||Sony FE|
|Number of diaphragm blades||9|
|Special elements / coatings||Nano AR II|
|Weight||847 g (1.87 lb)|
|Diameter||98 mm (3.84″)|
|Length||137 mm (5.39″)|
|Filter notes||Rear insert filter|
The 12-24mm is dust and moisture-sealed and weighs in close to two pounds (847g / 1.9lb). Optical construction includes three XA Extreme Aspheric elements (including the largest that Sony’s ever made), two Super ED and three ED elements, as well as one aspherical lens element. Nano AR Coating II is used, along with a fluorine coating. The lens uses a nine-blade aperture.
Four XD linear motors move two focus groups and focusing is super silent. This delivers a constant minimum focusing distance of a mere 11 inches (28 cm).
The Sony 12-24mm f/2.8 GM will be available in August for $3,000.