光源

1. Origins, structure, and basic meaning

• Structure: 光源, read こうげん, means a source that emits light.
• Basic usage: It is used when adjusting lighting for a shoot or describing the light in a dark room.
  • 撮影では光源の位置を少し高くした。

2. Common pitfalls and similar expressions

• Source compared with 光線
  • 光源 refers to what emits the light, while 光線 refers to a ray or beam extending from it.