The new MK series by Fujinon boast impressive optical performance and minimal distortion for their small size. The 50-135mm is a T2.9 parfocal zoom lens measuring in at only 2 lbs and 8 inches long. It features an adjustable flange focus ring and a macro function, enabling the 3' 11" close focus to shorten to 2' 9" when the need arises. With a 28.5mm image circle, both the 50-135mm and it's wider twin the 18-55mm cover S35/APS-C sensors. With no focus breathing or optical axis shift while zooming, this ultra-compact lens features an E-mount and an 85mm front diameter.