The main function of aperture

The functions of aperture are: adjusting illumination, adjusting and controlling depth of field, and affecting imaging quality.

1, adjust the light.

This is the basic function of the aperture. When the aperture increases, the light intensity increases; When the aperture decreases, the light intensity decreases. It solves the exposure problem together with the shutter speed.

2. Adjust and control the depth of field.

This is the important role of aperture. Large aperture and small depth of field; Small aperture and large depth of field.

3, affect the imaging quality.

This is the function that the aperture is easily overlooked. Any lens has an aperture with the best imaging quality, that is, it is least affected by various aberrations. This aperture is commonly known as the best aperture. The exact position of the optimal aperture can be measured by using special instruments.

What's the lens?

The lens has two fingers in film and television. One is the optical element used by film cameras and projectors to produce images, which consists of multiple lenses. The second finger refers to the picture taken continuously from power on to power off, or the fragment between two editing points, also called ytterbium head.