One of the biggest perks of the Micro Four Thirds system is larger zooms in smaller packages. And now that Olympus has re-branded, one of the first moves for OM System, along with a new OM1 flagship mirrorless, is to create the smallest fixed aperture telephoto yet: The OM System 40-150mm f4 Pro. Now, there’s the usual slew of fine print conditions attached to any claim of world domination. OM System says that it’s the smallest 300mm equivalent with a fixed aperture. And of course, the Micro Four Thirds format with the 2x crop factor and the narrower f4 is helping out here immensely. But, the OM System 40-150mm f4 Pro is still pretty small.
