045Effect of Shutter Speed and Effect of ApertureAperture and shutter speed determine the exposure to light. You can createmany interesting effects once you understand these aspects.Effect of Shutter SpeedShutter speed is the length of time the shutter is open. You can enjoy manyinteresting effects by adjusting the shutter speed.Using slower shutter speedA low shutter speed blurs motion on theimage. You can feel the speed in thepicture on the right.Using faster shutter speedA fast shutter speed is essential forcapturing the movement. A faster shutterspeed froze the same shot as shown onthe right.Setting the ExposureEffect of the ApertureThe aperture stop of a lens can be adjusted to control the amount of light reachingthe image sensor. This is similar to the way the pupil of the human eyes reacts tobright light. The next image showshow the aperture is adjusted to a differentsize according to the corresponding aperturestop described in the lens. (The image may bedifferent from the actual product and does notrepresent a specific lens model.)Opening the aperture (reduce theaperture value)Objects closer and further away than thefocused subject will be out of focus.You will see that the background is out offocus when you focus on the subject.Closing the aperture (increase theaperture value)The range in focus expands forward andbackward.You will see that both the subject and thebackground are all in focus if you use ahigh aperture stop.▲ Aperture: f = 2.8,Shutter Speed: 1/500sec▲ Aperture: f = 11,Shutter Speed: 1/500sec▲ Aperture: f = 8,Shutter Speed: 1/125sec▲ Aperture: f = 8,Shutter Speed: 1/15sec
