Shutt er speed and ex­po­sure

NPhoto - - Special Feature -

To pre­vent a pic­ture get­ting too bright or too dark when you change the shut­ter speed, the cam­era will ad­just the aper­ture to main­tain the same ex­po­sure. In the ex­am­ple above, you can see that set­ting a fast shut­ter speed of 1/800 sec (less light) re­sults in a large aper­ture of f/2.8 (more light). Opt­ing for a slower shut­ter speed of 1/13 sec (more light) forces the cam­era to pick a smaller aper­ture of f/22 (less light).

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