How to adjust the aperture of iphone camera

First, you need to download the slow shutter software:

1, slow shutter is a photography App specially used for shooting long exposures.

2. This App allows users to choose automatic, manual or shooting halo effect according to shooting mode. After choosing the mode, they can choose the appropriate shutter speed according to the exposure market, even B-door exposure.

1, shutter speed is an important parameter of digital camera shutter. The shutter speed of different models of digital cameras is completely different. Therefore, when using a certain type of digital camera to shoot a scene, we must first know the shutter speed, because only when pressing the shutter, considering the start time of the shutter and grasping the release time of the shutter, can we shoot a vivid picture.

2. Usually, the shutter of ordinary digital cameras is mostly within11000 seconds, which can basically cope with most daily shooting. Shutter should not only look at "fast" but also "slow", that is, the delay of shutter. For example, in some digital cameras, the longest shutter is 16 second, which is enough for shooting at night. However, if the shutter is too long, it will increase the "noise" of digital photos, that is, miscellaneous stripes will appear in the photos. In addition, mainstream digital cameras must have aperture priority mode and shutter priority mode in addition to automatic shooting mode.

3. Aperture priority mode is that the user decides the size of the aperture, and then the camera calculates how much light enters according to the ambient light and exposure settings. This mode is more suitable for shooting still objects. Shutter priority mode is that the user decides the shutter speed, and then the digital camera calculates the appropriate aperture size according to the environment. Therefore, shutter priority mode is more suitable for shooting moving objects, especially digital cameras are very sensitive to vibration. Even shaking the camera slightly will produce blurred photos during exposure, which is more obvious when using a long focal length. When choosing a digital camera, it is best to choose a model with these modes to ensure the shooting effect.