How to draw reflected light? ?

First, draw the tangent of the reflection surface at the reflection point; Then draw a normal perpendicular to the tangent; Draw a line where the incident and outgoing rays are symmetrical to the normal, and this line is the reflected ray. The phenomenon of reflecting back to the original medium at the interface of the medium is called light reflection, and the light incident on the interface is called incident light. There is incident light first, then reflected light.

Reflected light, incident light and normal are in the same plane (three lines are coplanar); The reflection angle (the angle between the reflected light and the normal) is equal to the incident angle (the angle between the incident light and the normal) (according to the logical principle, it cannot be said that the incident angle is equal to the reflection angle) (the two angles are equal); Reflected light and incident light are separated on both sides of the normal. (The normal is centered).

reflection ray

When light propagates from one medium to another, the phenomenon of reflecting back to the original medium at the interface of the medium is called light reflection, the light reflected back to the original medium is called reflected light, and the light incident on the interface is called incident light. The light reflected by an object is called reflected light. Using indirect light distribution in photography has the same effect as astigmatism lighting. Because of the popularity of strongpoint, it is often used in indoor photography, which is also called reflective flash.

To this end, there are reflective umbrellas. When the umbrella reflector is not used, the light shines on the bright wall or roof behind the camera. The brightness will drop below 1/4, and there will be no eye-catching shadows, which will make the photo not like a lamp. The decrease in brightness can be compensated by high-sensitivity film.