尼康AF-S尼克尔80-200mm f/2.8D IF-ED

镜头描述:镜头制造是一门艺术-尼康工匠用最好的材料制作尼克尔光学镜片，以添加他们的智慧和技术为世界上最好的镜头带来生活而自豪。他们推动镜头制造的前沿，努力提供“玻璃”，使世界上最伟大的照片。AF尼克尔镜头与尼康单反配合使用，即使是最新的单反也能获得最佳性能。尼康80-200mm f2.8D ED AF是一款出色的2.5倍长焦变焦相机，适用于运动、肖像和自然摄影。bobsports官网在整个焦距范围内，ED玻璃元件具有快速恒定的f2.8最大光圈，即使在最大光圈下也能提供高分辨率和高对比度的图像。旋转变焦环提供精确的变焦操作。ED玻璃:尼克尔长焦透镜的基本元素。尼康开发了ED(特低色散)玻璃，使生产的镜头通过最大限度地减少色差，提供卓越的锐度和色彩校正。简单地说，色差是当不同波长的光线穿过光学玻璃时发生的一种图像和颜色色散。在过去，纠正长焦透镜的这个问题需要特殊的光学元件，提供异常色散特性-特别是氟化钙晶体。 However, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens\' refractive index. So Nikon designers and engineers put their heads together and came up with ED glass, which offers all the benefits and none of the drawbacks of calcium fluorite-based glass. With this innovation, Nikon developed several types of ED glass suitable for various lenses. They deliver stunning sharpness and contrast even at their largest apertures. In this way, Nikkor\'s ED-series lenses exemplify Nikon\'s preeminence in lens innovation and performance. Nikon Super Integrated Coating ensures exceptional performance. To enhance the performance of its optical lens elements, Nikon employs an exclusive multilayer lens coating that helps reduce ghost and flare to a negligible level. Nikon Super Integrated Coating achieves a number of objectives, including minimized reflection in the wider wavelength range and superior color balance and reproduction. Nikon Super Integrated Coating is especially effective for lenses with a large number of elements, like our Zoom-Nikkors. Also, Nikon\'s multilayer coating process is tailored to the design of each particular lens. The number of coatings applied to each lens element is carefully calculated to match the lens type and glass used, and also to assure the uniform color balance that characterizes Nikkor lenses. This results in lenses that meet much higher standards than the rest of the industry.

尼康AF-S NIKKOR 80-200mm f/2.8D IF-ED规格