With a single light source, the most important considerations were its direction and apparent size.

单一光源，最重要的考虑因素是其方向和明显的大小。

youdao

Achieving softer light requires making the apparent size of the light source bigger.

柔和的光需要获得明显的大小使光源的大。

youdao

At this point you've perhaps been slightly misled: it's not really the physical size of the light source that matters - just its apparent size relative to the subject.

在这一点上你也许有些误导：这不是真正的物理尺寸问题的光源——只是其明显的大小相对的主题。

youdao