With a retractable mechanism design, the Olympus 14-42mm f/3.5-5.6 II R is extremely compact with an overall length of just 1.9 inches (48.3mm) retracted, although it extends to about double that length when zooming. It is a digital-dedicated design for Micro Four-thirds cameras only. Because of electronic autofocus systems and some distortion corrections that are built in, it works best on Olympus E-P cameras, though it can be used on Panasonic cameras, too. It is an Olympus MSC (movie/stills compatible) lens, which means it’s nearly silent high-speed AF works great for shooting video.