户外望远镜 Legend Ultra 191042
【已经过期】:请登录重发或删除过期商品
产品属性:
| 价格: | ¥5200 元 1 |
|---|---|
| 供货总量: | |
| 所在地: | 上海上海市 |
| 产品规格: | |
| 包装说明: | |
| 品牌: |
详细信息
美国BUSHNELL博士能 双筒望远镜 Legend Ultra HD 传奇系列 191042
正品行货
品牌:博士能 Bushnell双筒望远镜
产品类型:双筒望远镜
产品代号:191042
放大倍数:10x
物镜直径(mm):42
棱镜结构:Roof
棱镜玻璃:Bak-4
镜片镀膜:完全多膜
视野(米@1000米):113
重量(克):638
防水、防雾功能:是
三脚架支持:是
超低色散镜片ED(Extra low Dispersion)
ED(Extra low Dispersion)超低色散镜片:有效解决一般镜头产生色散问题一般光学镜头虽然具有较低的球面像差,但是相对而言,也会伴随产生较大的光线散射,也就是色像差(Chromatic aberration),主要是因为可见光(红、蓝、绿)之不同颜色波长不同,经过光学镜片折射率也不同,无法汇聚在同一平面位置,尤其是在长焦距的望远镜头上,波长长短不一红、蓝色容易明显造成色散,影像锐利度及色彩鲜明度大大受影响。
ED(超低色散)镜片是一种创新镜片,用于解决其它类型高性能镜片(如氟钙化合物镜片)易碎和易刮花的问题。ED镜头可减少色差,并可确保各类波长的光线实际对焦于同一点。因此会产生明暗对比强烈但几乎没有颜色失真的影像。
ED镜片是加工了有着为了减少在长焦所产生的色差,而低分散光的波长的特性的特殊玻璃,而制成的镜头所赋予的称号。一般使用与超低分散镜头用的最理想的材质是,叫萤石的矿物质。但是萤石天然矿物稀少,且很难加工。因而目前是用模仿萤石光学特性的人工萤石来制造ED镜头,且一般在长焦镜头中插入1 - 4片左右。Nikon在光学镜头领域技术独特,早在70年代就发表第一支ED超低色散光学镜片,有效解决一般长焦距望远镜头产生色散问题,让摄影创作色彩鲜明、锐利,十分了得。所以特别是数字相机更是推荐使用ED镜头。NIKON单眼相机镜头型号(如.NIKON原厂AF-S DX Zoom Nikkor ED 17-55mm F2.8G(IF)镜头 )中如标示ED即代表使用ED(Extra low Dispersion)超低色散镜片。






ED Prime Glass
Ultra Wide Band Coating
RainGuard? HD water-repellent lens coating
Ultra wide field-of-view
Long eye-relief
Lightweight, magnesium chassis
Waterproof/fogproof
Soft touch grips
Locking diopter
Includes premium carry case, neckstrap, microfiber lens cloth and
deluxe binocular harness
Binoculars.com's Binocular of the Year
"...Our Binocular of the Year provides a level of light transmission that's unmatched in its price category, making it a favorite for all kinds of use."
See what the new Legends are made of.
Quite possibly the best binocular system ever made in this class of optics. The Legend Ultra-HD has three key ingredients that make it so: ED (Extra-low Dispersion) Prime Glass which produces a color tuned, high resolution image. Ultra Wide-Band Custom Coating which produces the brightest possible light by coating each lens individually to maximize available light. RainGuardHD – Bushnell’s patented permanent water-repellant coating. The Legend Ultra-HD also has an extremely wide field of view to easily view moving animals or objects and is lightweight with a streamlined feel.

