How to shoot a beautiful portrait photographer with a large aperture and shallow depth of field

The size of the aperture has nothing to do with the shooting distance, but only with the exposure combination and depth of field effect, and the shooting distance is related to the lens focal length. At the same distance, the longer the focal length, the larger the imaging.

Generally speaking, people are photographed with a large aperture and scenery with a small aperture. But the specific situation should be analyzed in detail, and there is no absolute law. The larger the aperture, the more light passes through per unit time, and vice versa. Aperture is generally expressed as the letter "f+ value", such as f5.6, f4, etc. It should be noted that the smaller the value, the larger the aperture. For example, f4 is larger than the aperture of f5.6, and the difference between two adjacent apertures is twice, which means f4 is twice as big as that passing through F5.6. Relatively speaking, the definition of shutter is very simple, that is, the time allowed for light to pass through the aperture is expressed by numerical values, such as 1/30 seconds, 1/60 seconds, etc. Similarly, the difference between two adjacent shutters is twice.

Aperture priority is to manually define the size of the aperture, and then use the camera's metering to obtain the corresponding shutter value. Because the aperture directly affects the depth of field, this mode is most widely used in ordinary shooting. When shooting portraits, we usually use large aperture and long focal length to blur the background and get a shallow depth of field, which can highlight the subject. At the same time, a larger aperture can also obtain a faster shutter value, thus improving the stability of hand-held shooting. When taking photos such as scenery, we often use a smaller aperture value, so that the range of depth of field is wider, which can make the distant and nearby scenery clear, which is also applicable when shooting night scenes.

In the case of aperture priority, we can easily control the depth of field by changing the aperture size, while in the case of shutter priority, using different apertures can achieve good shooting results for moving objects. Both should be used flexibly to meet our shooting needs in different situations. Like traditional cameras, the aperture range and shutter speed of digital cameras are very important when shooting, but for ordinary commercial and domestic digital cameras at present, people only care about how to choose the shooting scene because of the full automation of the cameras, but don't pay much attention to the aperture and shutter speed automatically controlled by the cameras. However, if you buy a digital camera, you'd better compare the aperture range and shutter speed of various digital cameras, because the aperture and shutter will cooperate to control the overall light entry range of your digital camera, which means that it will affect whether your camera can get good results in various light conditions. At the same time, the shutter speed will directly affect the effect when you shoot dynamic images, and the aperture range will affect the depth of field of your shot images.