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Large aperture standard zoom lens open F value 2.8 to cover from the high frequency of use 24mm to 70mm. 2 aspherical lenses, using two ED glass, an optical system which has been subjected to “T * coating” various aberrations are satisfactorily corrected, sharp picture quality with excellent contrast from the aperture is obtained. In addition, the lens built-in SSM (ultrasonic motor) to realize a quick and high-quiet AF. Focus mode switch and also equipped with a focus hold button, it is also friendly operability. In addition, beautiful blur attractive natural by circular aperture adoption. Landscape, snaps, allowing a new image expression in a wide range of photographic genres such as portraits. MTF (modulation-transfer function) MTF is one of the lens performance evaluation method that shows contrast reproducibility of the lens. Whether the much image is subject on the imaging surface has been faithfully reproduced, it expressed in frequency characteristics. MTF characteristic diagram, the horizontal axis the distance is from the center (mm), the vertical axis has a contrast, addition, MTF characteristics typical spatial frequency (ten / mm, 20 present / mm, 40 lines / For mm), Direction (radial: R, concentric: T), and is represented by the condition of the aperture value (opening, F8).Extra Description
Zoom magnification (optical) 2.9 times, lense type: zoom Focal length (wide-angle side) 24 mm, Focal length (telephoto side) 70 mm F value (wide-angle side) 2.80 f_stop, F value (telephoto side) 2.80 f_stop Filter diameter 77, Lens configuration 13 group 17 sheets, Lens Mount Sony ? No camera shake correction, Motor type ultrasonic motor