Sony is introducing a fourth G Master lens -- the very wide-angle zoom lens FE 12-24 millimetre F2.8 GM offers a constant aperture of F2.8 and a minimum focusing distance of 0.28 metres over the entire zoom range. A "floating focus system" divides the lens´ focus group into two independently controllable groups to maximize close-up performance as well as sharpness at any distance.
The E-Mount lens uses four original XD (Extreme Dynamic) linear motors, two for each focus group of the lens, which according to Sony are extremely fast and quiet. New control algorithms are designed to optimise the responsiveness of the XD linear motor system and ensure perfect synchronisation between the two focus groups. For manual operation, there is an adjustable focus hold button, a focus adjustment switch, a zoom ring and a focus ring.
The optical construction consists of 17 elements in 14 groups, including three XA (Extreme Aspherical) lens elements and one aspherical element, which are designed to suppress astigmatism, coma and field curvature up to the edges of the image. There are also three ED (Extra-low Dispersion) glass elements and two Super-ED glass elements that minimize chromatic aberrations. A new Nano-AR Coating II prevents internal reflections and minimizes stray light and ghosting effects.
The aperture is composed of nine blades. A rear filter holder provides space for standard ND filters, color correction filters, etc. The lens is dust and moisture resistant and the front lens element has a fluorine coating that repels water, oil and other contaminants to make it easier to wipe fingerprints off the lens surface.
Sony´s FE 12-24 millimeter F2.8 GM (SEL-1224GM) weighs 847 grams and will cost 3,299 euros (available in September).
Bild zur Newsmeldung: