Main factors affecting photography (please specify)

I think technically, it is mainly aperture, shutter and depth of field.

Another, personal feeling, is composition.

On the equipment, it depends on your figure and lens.

Mainly on technical issues. That's aperture, shutter and depth of field!

The main function of aperture is to control the depth of field and exposure. The larger the aperture, the shorter the depth of field, and the smaller the aperture, the longer the depth of field. Another main function of the aperture is to control exposure. The larger the aperture, the greater the exposure, and the smaller the aperture, the smaller the exposure.

The main function of shutter is to control exposure and "freeze" moving images. The slower the shutter speed, the greater the exposure, and the faster the shutter speed, the smaller the exposure; The faster the shutter is, the more you can grasp the instantaneous static state of the moving object.

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.

The combination of aperture and shutter forms exposure, which is not unique under certain exposure conditions. For example, the current normal exposure combination is F5.6 and 1/30 seconds. If the aperture is increased by one step, that is F4, the shutter value at this time will become 1/60, and this combination can also achieve normal exposure. Although different combinations can achieve the same exposure, the pictures taken have different effects. The concept of "depth of field" is involved here. The so-called depth of field means that when the lens focuses on the subject, the subject and its scenery before and after have a clear range, which is called depth of field.

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.

Contrary to aperture priority, shutter priority is to obtain aperture value through camera metering when the shutter is defined manually. Shutter priority is mostly used to shoot moving objects, especially sports shooting. Many friends find that when shooting moving objects, the subject is often blurred, mostly because the shutter speed is not fast enough. In this case, you can use the shutter priority mode, roughly determine a shutter value, and then shoot. And the motion of the object is generally regular, then the shutter value can also be roughly estimated. For example, the shutter speed for photographing pedestrians is only1125 seconds, while it takes11000 seconds for photographing falling water droplets.

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.

Increasing the sensitivity can improve the shutter speed and the probability of taking clear photos in dark environment, but the disadvantage is that with the increase of sensitivity, noise will appear in the photos, which will affect the imaging quality. So don't use the method of increasing sensitivity and exposure unless you have to.