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200pf等于多少f

来源:baiyundou.net   日期:2024-07-19

作者:影像狗

拿到了尼康发布了全新的Z 600mm f/6.3 VR S PF时,狗哥和狗崽都震惊了,这也太轻便了吧!这竟然是600mm镜头的重量?

外观设计

镜头的总长度约为28.7cm,并没有特别短,这毕竟是600mm镜头,不过重量约为1390 克,让它成为各品牌镜头中最轻的600mm镜头。即使是女孩子使用一天也完全没有问题。

其实光看镜头的重量并不足以判断拿着是否省力或趁手,这支镜头的重心设计得更靠近机身,实现了更好的平衡性,让我们手持的感受也更加舒适。

镜头前组采用了优质的纳米结晶涂层,能够很好的防止眩光鬼影,对于长焦镜头而言这是非常重要的部分,毕竟强光环境下拍摄明亮背景的主体是很常见的。(比如打鸟等题材)

镜身配备了4个L-Fn2按钮和1个L-Fn按钮,大家可以根据自己的喜好分配功能。镌刻有NIKKOR标志的金属板也使镜头更加具有标志性。

Z 600mm f/6.3采用了14组21片镜片,光圈叶片为9片。采用菲涅尔相位镜片(PF镜片)实现了轻巧又紧凑的外形的同时,也带来了绝佳的分辨率表现。它还采用了SR镜片来控制短波长光,能够进一步加强对色散的控制。看这个结构图,稍加分析基本就能得出这颗镜头绝对不弱的结论。

当然,MTF图也印证了我们的猜测,大炮必备的"天花板MTF"。

注:MTF图仅能在同品牌内进行对比,不同品牌测试方法及采用模式不同,所以结果会有较大出入。

实拍体验

这支镜头的极致轻量化,让狗哥在用它拍摄时可以随手抬起来抓到想要的瞬间画面,操控的感受是非常好的。

尼康表示,虽然它的设计初衷是更紧凑、更轻、更易于手持,但它也没有舍弃画质。借助先进的光学性能,可以在不担心色彩畸变的情况下精确呈现如复杂的图案、动物的毛发等微小的细节。

上图继续放大:

可以从上图看到,的确体现了卓越的分辨率与反差表现。

有意思的是这颗镜头的焦外表现也可圈可点,利用长纵深的视角拍摄阳光撒下的草地,可以看到星星点点的光斑为前面摄影主体形成了很好的氛围感。600mm焦段的景深压缩能力也让这张图看起来趣味十足。

由于600mm焦段足够远,基本在拍摄人或物时不打扰到被摄人或物,往往能拍到更加自然、真情流露的画面。借助相机低时滞的快门,狗哥轻松捕捉到了小女孩绝佳表情的瞬间。

狗崽是一个究极人像党,那么Z 600mm f/6.3 VR S PF是否能满足人像拍摄的需求呢?答案是肯定的,只要距离合适,谁说600mm就不能拍人了呢?

只要拍摄距离合适(模特够好看),这样的超远摄镜头一样能带来不错的人像摄影。

这样的长焦镜头还有一个非常需要关注的点就是对焦性能,很多人会看到stm三个字母就默认对焦性能不够好。实际上STM对焦马达是有高响应速度以及静音的优势,对焦速度更多是看驱动马达的出力性能以及对焦组镜片重量。

所以最终我们直接进行实测,这是最能反应对焦速度的东西了。从实测可以看出对焦速度非常快且精准,借助Z8的高速高性能识别性能,一直牢牢的锁住人眼、摩托艇。

连拍人物快速跑动(连拍照片拼接)

连拍远处摩托艇(连拍照片拼接)

这支镜头的防抖性能也非常优秀,狗崽手持它拍摄远处的人快速移动,在不后期增稳的情况下,可以看到画面也非常稳定,这对于拍摄视频帮助非常大。

即使加速播放也能感受到完全不抖,像在架子上一样(手持视频拍摄无增稳加速1.5倍)

综述

这支Z 600mm f/6.3 VR S PF秉持了尼康轻量化大炮的特点,让狗哥和狗崽都用得非常开心。轻量化加高画质,还有优秀的防抖和对焦加持,让它可以面对即兴、多场景多题材下轻松手持拍摄,可谓是超级拍摄利器!非要鸡蛋里挑骨头来说哪里美中不足的话,那大概就是F6.3这个光圈数字还不够极致吧~

优点:

1、极致轻量化的设计,最轻600mm大炮

2、高画质表现

3、优秀的对焦和防抖性能

缺点:

1、镜头规格F6.3对于数据党来说还不够极致

图片样片 | SAMPLE IMAGE

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裴往闹4880贴电容上面标22,是表示22pF还是2*10^2=200pF? -
傅冰送13110834614 ______ 这应该是属于电容的直标法,22,标识的是22pF

裴往闹4880电容1F等于多少pf是不是10的12次方 -
傅冰送13110834614 ______ 是的.1F=1000000μF=10^6μF 1μF=1000000pF=10^6pF

裴往闹4880c=1.0*10pf等于多少f -
傅冰送13110834614 ______ 问题问得乱七八糟.如果你是问1.0pF等于多少F,那么1.0pF(一般念做“皮法”) = 1.0*10^-12 F.毫微纳皮飞,这个口诀要记住.

裴往闹4880的的的的请问一下1F=多少PF?
傅冰送13110834614 ______ 10的-6次方 ,也就是100万分之1 1F=1000000000000PF=(10^12)PF 1pF=[10^(-12)]F=0.000000000001F

裴往闹4880SMT3.7uf等于多少F,多少NF,多少PF -
傅冰送13110834614 ______[答案] 1uF=10^(-6) 1uF =1,000nF1nF=1000pF 3.7uF=3.7*10^(-3)nF=3.7*10^(-6)pF

裴往闹4880某电容器上标有220V 300微F,300微F=多少F=多少pF? -
傅冰送13110834614 ______ 1uF=1 000 000 pf 100pf =0.0001uF

裴往闹4880电容160pF等于多少F -
傅冰送13110834614 ______[答案] 1F=1000000uF 1uF=1 000 000 pf 1nF==100pF 因此160pF=160x10^(-12)F=1.6x10^(-10)F

裴往闹48801UF=()PF -
傅冰送13110834614 ______ 1UF=(1000000)PF

裴往闹48802311pf等于多少f -
傅冰送13110834614 ______ 2311pf等于(0.000000002311)f;2311*10^(-12)=0.000000002311

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