Extended functions 40Using the Aperture Priority, Shutter Priority, or Manual modeAdjust the aperture value or shutter speed to control the exposure of your photos. You can use these options in the Aperture Priority,Shutter Priority, and Manual modes.Shutter speedShutter speed, which is an important factor in the brightness of aphoto, refers to the amount of time it takes to open and close theshutter. A slow shutter speed allows more time to let light in. Allthings being equal, photos are brighter, but fast moving objectstend to blur. On the other hand, a fast shutter speed allows lesstime to let light in. Photos are darker, but objects in motion arecaptured more clearly.S Slow shutter speed S Fast shutter speedAperture valueThe aperture is a hole that lets light into the camera. The aperturehousing contains thin, metal plates that open and close, wideningor narrowing the aperture, and controlling the amount of light thatenters the camera. The size of the aperture is closely related tothe brightness of a photo: the larger the aperture, the brighter thephoto; the smaller the aperture, the darker the photo. Note thatthe larger the aperture value, the smaller the aperture size. Forexample, an aperture set to 5.6 is larger than an aperture set to 11.S Small aperture value (The sizeof the aperture is large.)S Large aperture value (The sizeof the aperture is small.)