Pentax ZX-60 ZX-60 Manual - Page 32
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g 7athaBTING MODES ANOTHE144i7iPthlinE Effect of aperture and shutter speed A correct exposure is established by a combination of shutter speed and aperture setting according to the subject brightness. There are many correct combinations of shutter speed and aperture for a particular subject brightness. Different shutter speed and aperture settings produce different effects. Effect of shutter speed The shutter speed determines the film exposure times, or the length of time that the light is allowed to strike the film. If the subject is moving, the image will be blurred when a slow shutter speed is used. It is possible to enhance the effect of motion, (The movement of a water, waterfall) by intentionally using a slower shutter speed. Choosing a faster shutter speed will allow the image of a moving subject to be frozen. A faster shutter speed also helps prevent camera shake. slower shutter speed c Effect of aperture The aperture increases or reduces the amount of reflected light from an object which passes through the lens, controlling how much light strikes the film. If the aperture is opened up to increase the amount of light, subjects in front of and behind an in-focus subject will not be focused. That is the range of focus (depth of field) becomes small. If the aperture is stopped down to reduce the amount of light, the depth of field increases. For instance, if you shoot a person against a landscape with the aperture open, the landscape in front of and behind the person will be blurred, making the person appears to rise out of the landscape. By contrast, stopping down the aperture increases the in-focus range. open aperture stopped down aperture 0 0 faster shutter speed :•7