Question

Что такое диафрагма (фото)?

Answer 1

Диафрагма - это устройство, регулирующее диаметр действующего отверстия объектива, через которое проходит свет.

Answer 2

What is a diaphragm in photography?

In photography, a diaphragm refers to a component of a camera lens that controls the amount of light that enters the camera. It is typically made up of a series of overlapping blades that can be adjusted to create a larger or smaller opening, known as the aperture. By changing the size of the aperture, the diaphragm regulates the amount of light that reaches the camera's image sensor or film.

The aperture size affects two main aspects of a photograph: the amount of light and the depth of field. When the diaphragm is opened wider, more light enters the camera, resulting in a brighter image. Conversely, when the diaphragm is closed down, less light enters, resulting in a darker image. The depth of field, on the other hand, refers to the range of distance in a photograph that appears sharp and in focus. A wider aperture (smaller f-number) creates a shallower depth of field, with only a small portion of the image in focus, while a narrower aperture (larger f-number) creates a deeper depth of field, with more of the image in focus.

The diaphragm is controlled by the camera's settings or by the photographer manually adjusting the aperture. Different camera models and lenses may have different diaphragm mechanisms and controls, but the basic principle remains the same.