Reflection, projection, silhouette, miniature and double shadow are all shadows? So many pictures, what's the difference between them ~

1, the reflection is a real image, the size is unchanged, and it is directly flipped vertically.

2. Projections are virtual images of different sizes and need perspective.

3, silhouette, according to the outline of a person's face or body, paper-cut modeling, also refers to the outline cut out in this way.

4, microfilm, the larger area of information, pictures, recorded on a smaller photographic film with photographic technology. People or things of the same type are presented in a concrete and subtle way.

5. Ghost is a kind of light. When the strong light enters the lens, it is repeatedly reflected in the lens to form a virtual image on the screen. The image of the aperture hole is often illuminated on the screen, which is called ghost.