99
So let’s take the example of the capturing a silky waterfall. We
understand the need for a long shutter speed of perhaps 1 second.
We also want the lowest noise in our image so we must select as low an
ISO value as we can.
So, with the camera in hand, we adjust the ISO to 100, set the shutter
speed to 1 second but what about the aperture? What value do we set
here as we don’t have the automatically adjusted settings as with the P,
A or S semi-automatic modes.
Come to the rescue the camera’s inbuilt exposure meter, the same one
which is used by the camera in the auto, or semi-automatic modes.
When we are in the manual mode, the same metering modes are used,
full area, centre weighted or spot metering. We decide which one
depending upon the subject.
For our waterfall we might select full area metering or centre weighted as
both will give the same overall exposure reading.
If we take a look at the display on the LCD screen, at this time, we will
see the exposure meter and the current exposure displayed.
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