About Panasonic 70-200mm f/2.8
The LUMIX S PRO 70-200mm F2.8 O.I.S. (S-E70200) is a large-aperture telephoto zoom lens that boasts high descriptive performance across the entire zoom range. It is designed and developed for professional field shooting.
Comprising 22 elements in 17 groups, the use of 2 UED (Ultra Extra-low Dispersion) lenses, 3 ED (Extra-low Dispersion) lenses and optimum alignment effectively suppresses both axial chromatic aberration and chromatic aberration of magnification. Astigmatism is also corrected with an aspherical lens, achieving high resolving performance. Adoption of a double focus system suppresses fluctuation of aberration even at close distances, which results in high descriptive performance from the center to the corners over the entire zoom range despite its large aperture.
Covering from 70mm to 200mm by itself, the use of a Teleconverter allows maximum 280mm (1.4x, with DMW-STC14) and 400mm (2x, with DMW-STC20) super telephoto shooting*1, with maximum 480 fps focus control for high-speed, high-precision auto focus. The O.I.S. (Optical Image Stabilizer) in the lens complies with the camera’s Body I.S. and the 5-Axis Dual I.S. makes it possible to use a 7-stop slower shutter speed. Adoption of a focus clutch mechanism enables instant AF/MF switching and accurate manual focusing.
The constant F2.8 large aperture provides smooth defocus gradation from the focus peak to the neighboring area of the image to achieve a beautiful bokeh effect as well as a rich perspective. The LUMIX S PRO 70-200mm F2.8 O.I.S. also excels in video recording performance with a mechanism that suppresses focus breathing, which was a fatal problem in all interchangeable lenses designed for still image photography.
The rugged dust/splash-resistant design withstands use under harsh conditions even at 10 degrees below zero for high mobility. The filter size is 82 mm, with an 11-blade circular aperture diaphragm.