We've seen a lot of lens news for full-frame mirrorless cameras lately, so it's interesting when something for smaller crop-sensor cameras appears on the horizon. This is especially true given the popularity of models in Sony's A6000 line, including the A6000 itself and newer cameras like the A6600, A6400, and A6100. These smaller, lighter cameras share the same mount as the full-frame models, but are much more user-friendly in price and are loved by a wide range of users, including vloggers and travel photographers. So we're delighted to hear that, if the rumors are to be believed. Sigma is about to release its first mid-range zoom lens for Sony APS-C in the form of a contemporary 18-50mm f/2.8 DC DN lens. Trusted leaker Nokishita shared some speculative features (via Sony Alpha Rumors), including 13 elements in 10 groups, a 12,1cm minimum shooting distance, and a 55mm filter diameter. With a constant f/2.8 aperture and a 35mm-equivalent focal length of 27-75mm, it would make an ideal high-quality walking 'normal' lens well suited for a wide variety of situations, similar to the classic 24 -70mm f/2.8 type optics that many full framers are used to. Weighing just 290g (apparently) and measuring a relatively compact 61,6 x 76,5mm, it's likely to be a welcome addition to anyone's bag carrying one of Sony's APS-C bodies.