الإضاءة غير المباشرة .. كتاب الإضاءة والفلم

Third: indirect lighting

The sources of this type of illumination do not differ from the previously mentioned sources except for the direction of the rays falling on the body. . Concentrated light sources are rarely used as indirect lighting unless the purpose is to show a special artistic effect
In the two previous cases, we have assumed that the rays emitted from the light sources are directed towards the object that will be photographed. However, if we wanted the illumination to be indirect, the light source would be directed to a surface to reflect the rays, and then they would fall on the body. This reflective surface may be shiny, such as silver paper in the form of sheets of paper similar to wrapping paper for chocolate and cigarettes (i), or it may be a matte surface such as a white wall or a cloth stretched on a stand equipped for the purpose, as shown in (Fig. 11 p. 40). The properties of reflection differ on surfaces if It was shiny or matte, and this is what we show in (Fig. 30).

Lighting is used. Indirect lighting is usually as an aid to other basic lighting, unless the photographer deliberately takes it as a single source to obtain a specific artistic effect he wants in the image.

Fourth: Lighting that does not lead to shadows

Shadowless lighting

Despite what we have learned about the important role that shadows play in the image, the nature of some subjects, or the purpose of the image, may sometimes require that no shadows appear in them at all.

This is facilitated by the use of a frontal light source that emits diffused rays, and the area from which the light is emitted is large. When photographing with artificial light sources, the light sources are usually placed in a ring (Fig. 32) around the photographic lens itself and directed towards the subject to be photographed.

The sky overcast with white clouds is considered an excellent source for this purpose when photographing outdoors, as the clouds spread sunlight from all sides around the photographed subject, so the amount of light falling on all sides is equal, so there are no shadows in the picture.

Subjects that are suitable for this type of lighting are:

1- Those that are suitable for images known as “high key” or with a high layer, such as portraits of children and female faces, as this type of lighting greatly reduces the appearance of any wrinkles on the face.

2- All the objects that we want to photograph without losing any of the details that usually do not appear obvious in the shadows, such as the pictures needed for catalogs of glassware, china, shiny pottery, metal utensils, international devices, silverware, flowers...etc.

It is easy to prepare in the photography studio facilities for photographing such subjects, depending on the nature and circumstances of the object to be photographed. We have shown in Figures 33 and 34 some of these means.