![]() ![]() ![]() In use, we found the focusing system to be quiet, fast and reliable with the lens mounted on a Sony A6000 camera. Importantly, the lens is fully compatible with the "Direct Manual Focus (DMF)" system feature of Sony cameras that enables the user to instantly switch between autofocus and manual focus.įocusing is fully internal but zooming is not, with the length of the lens changing as you zoom from 18mm to 50mm. The Sigma 18-50mm F2.8 DC DN Contemporary features a stepping motor that allows for virtually silent auto-focusing, making it well-suited to video use. The focusing ring is on the narrow side and is located closer to the lens mount, making it easier to locate in a rush. The lens extends by about an extra 4cm when fully zoomed out to 50mm. The zoom ring is generously wide and has a tactile ridged, rubberised grip band that has a smooth action. The Sigma 18-50mm F2.8 DC DN Contemporary feels solid enough in your hand, despite its mostly polycarbonate construction. The optical elements are made of high-grade glass. It also incorporates a brass bayonet mount that's supposed to be more durable than a normal metal mount. ![]() The lens has a plastic shell with a mixture of metallic parts and a compound material, TSC (Thermally Stable Composite), used inside. This makes it the most compact standard zoom lens in its class, when assessed as an AF compatible, F2.8 constant aperture zoom lens for APS-C sensor cameras.Īs demonstrated by the product images, it's a great match for a small camera like the Sony A6000 that we tested it with, where it feels very well balanced.īuild quality is excellent given the affordable price tag. Given the fast and constant f/2.8 maximum aperture, the Sigma 18-50mm F2.8 DC DN Contemporary is a surprisingly small and lightweight lens, measuring almost 7.6cms in length and weighing in at a mere 290g / 10.2oz, yet it still manages to maintain a constant aperture of F2.8 throughout the entire zoom range. The Sigma 18-50mm F2.8 DC DN Contemporary lens is is available in Sony E-Mount and L-Mount versions and is priced at £429 / $549 in the UK and USA, respectively. The Super Multi-Layer coating helps to ensure that flare and ghosting are well-controlled even in backlit conditions. This lens uses a stepping motor for fast, quiet and precise auto-focusing and full-time manual focus override is also possible. It features a rounded 7-blade diaphragm which creates an attractive blur to out-of-focus areas of the image and an internal focusing mechanism which means the lens barrel doesn't move. This lens has a minimum focusing distance of 12.1cm / 4.8" with a maximum magnification ratio of 1:2.8 at the 18mm focal length. The optical formula is comprised of 13 elements in 10 groups, including 1 Special Low Dispersion (SLD) lens to reduce chromatic aberrations and color fringing and 3 aspherical lenses to limit distortion and spherical aberrations. The Sigma 18-50mm F2.8 was first announced in October 2021. The Sigma 18-50mm F2.8 DC DN Contemporary for either Sony E-Mount or L-Mount is a new fast standard zoom lens for Sony, Leica, Panasonic and Sigma APS-C sensor mirrorless cameras, where it provides a 27-75mm equivalent focal length range in 35mm full-frame terms. ![]()
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