Olympus M.ZUIKO DIGITAL ED 300mm F4 IS Pro on the Olympus OM‑D E‑M1. You will love it, but birds will be less than pleased. Photo by Jordan Stead.

Olympus just squeezed a 600mm equivalent field of view into a 1.27kg (2.8 pound) lens, complete with image stabilization, weatherproofing and an impressive close focusing distance. Meet the Olympus M.Zuiko Digital ED 300mm F4 IS PRO.

This compact, 2.8 pound supertelephoto is splashproof, freezeproof and dustproof, and is the first Olympus interchangeable lens with a built-in image stabilization mechanism. When paired with the Olympus OM-D E-M1 (firmware version 4.0) or E-M5 Mark II (firmware version 2.0), the 300mm's in-body and in-lens image stabilization work together to produce image stabilization performance that Olympus claims is equivalent to up to six stops of compensation. 

We got the chance to shoot with it recently, and we've prepared a gallery of sample images.