The Olympus M.Zuiko 100-400mm F5-6.3 IS goes to the track

The Olympus M.Zuiko 100-400mm F5-6.3 IS offers an equivalent focal length range of 200-800mm, making it perfect for casual wildlife and motorsports photography. Relative compact, lightweight and weather-sealed, the 100-400mm also offers powerful image stabilization, which works with the 5-axis in-body system used in current Olympus mirrorless interchangeable lens cameras. We took the 100-400mm and an OM-D E-M1 Mark III to the Pacific Raceway here in Washington State recently, to see how it perfo...