Floodlight

Floodlight is a point light source that can illuminate evenly in all directions. Its illumination range can be adjusted arbitrarily and appears as a regular octahedral icon in the scene. Floodlights are the most widely used light source in rendering renderings. Standard floodlights are used to illuminate the entire scene. Multiple floodlights can be used in the scene. In order to produce better effects, the bulbs used for photography are installed into large reflective umbrellas for use as high-brightness diffused light sources. Although it is indispensable for indoor lighting, it can also be regarded as one of the light sources with good lighting effects for general amateur indoor photography.

Floodlight

What are the technical requirements for flood lighting?

1. Incident angle

It is the shadows that highlight the undulations of the façade, so lighting should always provide an image of the surface. Light hitting the facade at a direct angle will not cast shadows and make the surface appear flat. Shadow size depends on surface relief and the angle of incidence of the light. The average lighting direction angle should be 45°. If the fluctuation is extremely small, this angle should be greater than 45°.

2. Lighting direction

For surface lighting to look balanced, all shadows should be cast in the same direction, and all fixtures illuminating a surface in a shadow area should be cast in the same direction. For example, if two lights are aimed symmetrically perpendicular to a surface, shadows will be reduced and may appear confusing. Therefore, it may be impossible to see the surface relief clearly. However, large protrusions can produce large, dense shadows, and in order to avoid destroying the integrity of the facade, it is recommended to provide weaker lighting at an angle of 90° to the main lighting to weaken the shadows.

3. Perspective

In order to see shadows and surface relief clearly, the lighting direction should be different from the viewing direction, and the angle between these two directions should be at least 45°. However, for monuments that can be seen from several places, it is not possible to strictly adhere to this rule, the main observation point should be selected, and this direction of observation should be given priority in the lighting design.

Therefore, floodlights are commonly used lamps in flood lighting.