Материал из ФотоЭнциклопедия.рф

Перейти к: навигация, поиск


In photography, stopping down is to the act of increasing the f-stop number, thus decreasing the size (aperture) of the iris of a lens, for example, stopping down from f2 to f4. This increases the depth of field of the image and allows less light to reach the film plane. To compensate for the latter, it is necessary to increase the exposure time, use a photographic film with a higher ISO rating, using or increasing the strength of artificial lighting, such as electronic flash or, in digital cameras, increasing the light sensitivity of the sensor.
