Panasonic Leica DG Vario-Elmarit 50-200mm F2.8 - 4.0 ASPH POWER OIS LensBrand:Panasonic Code:H-ES50200E A flexible optic ideal for wildlife, outdoor, and nature photography, this lens from Panasonic offers a 100-400mm equivalent zoom designed specifically for Micro Four Thirds cameras. The long reach is complemented by a bright f/2.8-4 maximum aperture range, which benefits working in low-light conditions and also affords control over depth of field for isolating subjects. The optical design incorporates several low dispersion elements, two aspherical elements, and an ultra-high refractive index element to control both chromatic and spherical aberrations for improved clarity and sharpness. A Nano Surface Coating has also been applied to limit flare and ghosting for increased contrast and colour fidelity when working in strong lighting conditions. Benefiting both stills shooting and video recording the Panasonic Leica 50-200mm lens has a 240 fps high-speed AF motor offers quick, quiet, and precise autofocus performance. Also, a POWER Optical Image Stabilizer will compensate for camera shake and works with Panasonic's Dual I.S. and Dual I.S. 2.0 in-camera stabilisation functions to minimise the appearance of camera shake. Additionally, the physical design of the lens is dust- and moisture-resistant, as well as freeze-proof, for use in inclement shooting conditions. The Panasonic LEICA DG ELMARIT 50-200mm F2.8-F4 POWER O.I.S. can also be used with the 1.4x Teleconverter (DMW-T14) or 2.0x Teleconverter DMW-TC20, which extends the focal length to 560mm / 800mm respectively (35mm camera equivalent), for capturing distant objects.