SIGMA has announced what they claim to be the smallest and lightest f2.8 zoom lens for APS-C format mirrorless cameras.
APS-C size mirrorless zoom
The new 18-50mm F2.8 DC DN | Contemporary lens is SIGMA’s first APS-C size mirrorless zoom lens. The zoom range equates to focal lengths of 27-75mm on a full-frame camera. This makes the lens very versatile, being well-suited for landscapes, portraits, street photography, architecture and events. With a close focusing distance of just 4.8 inches, it’s good for macro-style close-up shots as well.
The constant maximum aperture of f2.8 is ideal for video, allowing you to reframe without the need to adjust exposure. In addition, the 7-blade rounded aperture will deliver smooth bokeh for attractive backgrounds. SIGMA has powered the lens’s autofocus with a stepping motor. This delivers autofocus that is exceptionally fast and also quiet, which is another plus for video shooters.
Internally, the lens has 13 elements in 10 groups, with 1 SLD (Special Low Dispersion) and three aspherical elements. The addition of a Super Multi-Layer Coating will also help to minimize flare and ghosting. There’s also a petal lens hood to help improve contrast in your image.
SIGMA has polycarbonate for the body of the lens, which helps keep the weight down to just 9.2 ounces. However, metal has been used for some of its internal structures to ensure that the lens can stand up to frequent, heavy use. In addition, the lens mount has a dust- and splash-resistant structure to protect your camera when shooting in less than ideal conditions.
At under three inches in length, the lens is compact as well as lightweight. In addition, the internal focusing mechanism means that its dimensions don’t change in use. The size and weight of the lens make it great for handheld shooting or use on a gimbal.
Pricing and availability
The SIGMA 18-50mm F2.8 DC DN | Contemporary lens will be available towards the end of October 2021 in either Sony E mount or Leica L mount at a retail price of $549.