The role of photographic blank

Your question is a bit abstract, and I can only give you an answer according to my understanding.

First of all, position refers to the position of the subject in the photo. Generally speaking, the subject is best placed in the visual center, that is, the position of four points in the middle of nine squares, or the position of 1/3 of the picture.

Theme, as its name implies, is the theme of a photo. A good photo must have a distinct theme.

Blank means that a photo is not suitable for being too full. Too slow often makes the viewer breathless and uncomfortable. Of course it depends on the specific situation.

The companion is the part of the photo except the subject.

The' foreground' picture is a record of influence, which is hierarchical. Generally divided into foreground' subject' background. Of course, there may be only the subject and background', but it may be more monotonous than the foreground'

When using the foreground, pay attention to whether it is good to make your subject stand out. If not, you'd better not use it.

My personal ability is limited. That's all I can answer. I hope it helps you.