Under complex light and strong contrast and high-contrast environments, it is sometimes difficult to take care of the overall situation by using automatic exposure or shutter and aperture priority modes, and cannot highlight the subject to achieve the desired effect. At this time, the photographer needs to manually respond to the equipment. The exposure parameter adjustment, this is exposure compensation, also known as ±EV. For beginners, exposure compensation is generally used in still life and scenery shooting occasions. This occasion is suitable for calmly adjusting parameters and taking multiple photos with different compensation schemes for selection. However, in a picture with great contrast, it is difficult to take full care of the exposure compensation, and it is easy to lose sight of the other.virtual phone