想让背景更虚或更清楚：用Av档比较两张不同光圈的照片

In this mode, you set the desired aperture value and the camera sets the shutter speed automatically to obtain the standard exposure matching the subject brightness. A higher f/number (smaller aperture hole) will make more of the foreground and background fall within acceptable focus.

a lower f/number (larger aperture hole) will make less of the foreground and background fall within acceptable focus.

Press the shutter button halfway. The shutter speed is set automatically. Check the display and shoot. As long as the shutter speed is not blinking, the standard exposure will be obtained.

If a slow shutter speed blinks, it indicates underexposure. Turn the dial to decrease the aperture value (open the aperture) until the shutter speed blinking stops or set a higher ISO speed. If a fast shutter speed blinks, it indicates overexposure. Turn the dial to increase aperture value (close the aperture) until the shutter speed blinking stops or set a lower ISO speed.

The aperture value displayed varies depending on the lens.