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Author Topic: 玩创意水晶球摄影,你需要先解决这个问题  (Read 977 times)

ZhangAlix

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玩创意水晶球摄影,你需要先解决这个问题

2019-01-29
      水晶球是一种非常棒的摄影创意器材,把它放在镜头前,利用球体的折射,你能把面前的景物拍出非常不一样的感觉。
无论是风光、旅拍还是趣味人像,水晶球都有十分不错的表现——而且,它用起来没有什么太多的技术难度,详情请参考 《这个小道具,一定能帮你拍好创意人像!》一文。

在实际操作环节,你需要操心的事情并不多——至少,没有前期环节多。其中,最麻烦的就是选择最合适的水晶球。
不同尺寸的水晶球有不同的优缺点,适合不同的用途,使用时也有不同的注意事项。你应当对此有所了解,在前期准备时就选择最恰当的水晶球尺寸,才能让你的创作事半功倍。

1. 小尺寸(不足 60mm)
优点
便携。由于质量和尺寸都很小,这类水晶球你可以毫无压力地带在身上,它不会给你增加多少重量和空间容量的负担。
适合小空间。和其它大球需要寻找恰当的地方放置不同,小球可以轻易地用拇指和食指夹住;同时,它也可以塞进一些别的球进不去的小空隙(如栏杆、树枝缝隙等)。

缺点
稳定性差。重量轻既有好处也有坏处,让小球在更便携的同时,稳定性更差——不小心蹭一下,吹一阵风甚至只是跺跺脚,都可能让它移位。
对焦困难。由于球体很小,合焦范围也很小,需要更高的对焦精度。可以考虑用小一些的光圈值来拍摄。
畸变严重。球体折射成像的规律是,中心部分不变形而边缘部分畸变严重。而由于球体体积较小的关系,绝大部分景物都会位于边缘畸变区域。
适用性低。由于球体成像很小,你需要贴得很近才能完成构图,只适合搭配微距镜头使用。

2. 中等尺寸(80 mm 左右)
优点
适用性广。中等水晶球重量不太大,“占地面积不太多”,仍然相对便携;而由于它的折射成像体积较大,可以使用标准镜头拍摄,不一定非要搭配微距。
畸变较小。这一尺寸的水晶球,已经可以通过中心构图,把作为主体的景物放在清晰位置,减少畸变。

缺点
这一尺寸的水晶球缺点并不显著,但还是存在一个:
构图限制。除非你使用微距镜头,否则球体的画面比例不会太大。你无法采用边缘构图——这样空荡荡的地方太多,或者框架式构图/填充构图——让球体占据大半个画面。

3. 大尺寸(100mm 以上)
优点
成像良好。尺寸较大的球,可以保持很大比例的清晰无畸变成像部分。
构图自由。大尺寸的球可以采取填充式构图,或者用球把背景元素遮住一部分,形成近似于框架式构图。如果不想要太大的画面比例,也可以离远一些拍摄。

缺点
重量。大球的重量已相当于多带了一个相机。如果你需要长途跋涉,而且(你自认为)不是肌肉壮汉,那么最好不要带上它——除非实在是迫不得已。
尺寸。就算你不在乎这点额外重量,但你的相机包尺寸是固定的,带上大球可能要 “牺牲” 一些别的附件,这意味着你需要放弃一些其它的拍摄机会。

Source: 玩创意水晶球摄影,你需要先解决这个问题



 

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