什么是 K 值呢?K 值(茄子注:英文为 Kelvin,因此也叫开尔文、凯尔文)是相机里的手动白平衡设置,让你可以在拍摄时使用自己定义的色温值。使用 K 值通常有以下原因:
1、我需要对相机的更多控制!
2、我没有用 expo-disk(茄子注:是一种帮助相机测试白平衡的滤镜),但是我想要得到更精确的白平衡。
3、我喜欢色调暖些的照片,但是用”阴影”模式时又太暖了,”云层”模式时太冷了。我希望二者之间的一个值。
4、我希望减少后期编辑时间,保持照片色调一致性,却不用花很多时间去校色。
5、当白平衡设置稳定时,我可以全神贯注于构图,不用分心去担心照片会不会太蓝或者太黄。
如果你想试试使用自定义 K 值,下面这几点你必须得注意:
1、有一个学习过程。如果你是一个零基础的新手,如果你仍然在努力理解使用手动曝光模式,或许可以暂时先不学习自定义 K 值,晚一点再说。
2、你可以使用相机的自定义功能键,让调节 K 值变得更方便一些。
3、学习下面的 Kelvin 表,记住这样的规律:数字越小色温越冷,数字越大色温越暖。
4、要有耐心,习惯需要一些时间。
5、首先要多练习,待非常熟练以后,再在正式的客片中使用。
6、除非你特别有信心,否则最好用 RAW 格式拍摄。这样即便你设置了不恰当的 K 值,你的 RAW 文件还能补救。
7、把你的相机白平衡设置成”K”,然后开始手动调节色温设置吧。
Kelvin 表长的是这个样子滴:
图片来源:ONA HAU PHOTOGRAPHY
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