Page 4 understanding how the three elements of exposure work aperture shutter speed and iso and how to use them will help you master your digital camera and take the best shots. It is difficult to take good pictures without having a solid understanding of iso shutter speed and aperture the three kings of photography also known as the exposure triangle while most new dslrs have auto modes that automatically pick the right shutter speed aperture and even iso for your exposure using an auto mode puts limits on what you can achieve with your camera. Iso doenst change the brightness of an exposure changing the iso requires changes to either shutter speed or aperture to give the exact same ev or brightness the only effect on the picture itself should be increased noise more depth of field or less camera blur the ev is the same. Key points to remember about exposure aperture iso shutter speed use a large aperture value like f 28 or f 4 to get a shallow depth of field this can help you separate your subject from the background keep the iso as low as possible to avoid noise unless you have a reason to raise it. 3 metaphors for understanding the digital photography exposure triangle many people describe the relationship between iso aperture and shutter speed using different metaphors to help us get our heads around it let me share three
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