التباين الضوئي المفرط .. كتاب فن التصوير الفوتوغرافي

Excessive contrast:

What is your starting point? Is she to the seaside? If so, you will undoubtedly suffer from excessive contrast in your captured photos. Excessive contrast is represented by a white background made by the intense glare of the sun, and a subject in the foreground with black features and blurred details - if the subject is standing in the shade - and here you have to reduce the contrast to a reasonable degree using the reflectors available in the shooting location. You can use anything white as a reflector such as a white towel or a newspaper page, which a helper holds against the shaded side of the subject to reflect the sun's rays to the existing places to show their details. Beware of using anything colored as a reflector if you are photographing with colored film, as this will impart a tint of the same color to the subject.

The flash can also be used to fill in the shadows. For this purpose, the value of the used lens aperture is divided by the guide flash number usually written behind it, and the result is the distance that must be adopted between the flash and the subject.

Doubtless, there is a fact that must be paid attention to when using the flash in outdoor photography, which is that the flash light in this case is not as effective as indoor photography. As this effectiveness is usually reduced by half, and therefore you must have previously tested how to deal with external photography before you start the actual photography on vacation. If your flash is strong enough to give the lighting of the sun, do not give intense lighting to the shadows, as this weakens the beautiful artistic formation of the subject. Rather, try to make the shadows lighting one or two stops less than the lighting of the bright ones. Another way to reduce contrast is by using fast film. Amateurs tend to use slow or moderate speed film like 125 or 80 aza when the lighting is intense. Unfortunately, this increases the optical contrast in the image, because the slower the film, the greater the degree of optical contrast. While fast film - such as 400 or 10 aza - has a large exposure field that is able to reduce the degree of light contrast, and color and regular films are equal in this characteristic.