http://www.digitalcameraworld.com MARCH 2020 DIGITAL CAMERA^57
CAMERA COLLEGEAperture
If the depth of field (how much
appears sharply in focus)
is important, such as in
a landscape or portrait,
set the aperture first.Shutter speed
Set the shutter speed first
if the way that movement is
rendered – whether it’s either
frozen or blurred (above) – is
the main focus of the image.ISO
Think of ISO as the enabler:
if you want to use a smaller
aperture or faster shutter speed
to increase sharpness, a higher
ISO can allow you to do this.Auto ISO
If you set the ISO to Auto,
the camera will automatically
adjust the ISO as the lighting
changes. See ‘Camera Skills: Auto
ISO’ on page 59 for more details.áǝƏɎƳȒXƬǝƏȇǕƺˡȸɀɎّ
How do you decide which exposure variables you should adjust?
Manual exposure
What is the best way to get started with metering a scene yourself?
You get full control over the
aperture, shutter speed and ISO
in Manual, so you can choose precisely
how bright or dark the image is.
Manual mode is often used in
conjunction with spot metering, as this
allows you to base your exposure ona specific area of the picture. As you
point the camera at different parts
of the subject or scene, you’ll see
the indicator move up and down
the scale in the viewfinder.
If the indicator is in the middle, the
area covered by the spot meter will bea standard midtone value in the final
image. To make this area brighter, move
the indicator to the ‘+’ side of the scale
by using a larger aperture, a slower
shutter speed or a higher ISO. To make
it darker, choose a smaller aperture,
a faster shutter speed or a lower ISO.-3 -2 -1 0 +1 +2 +3
-3 -2 -1 0 +1 +2 +3
-3 -2 -1 0 +1 +2 +3
Make sure the indicator is on a ‘minus’
number when you meter a dark area,
otherwise the image will be too bright.When you’re spot-metering a bright area of the image, adjust the
exposure so that indicator is on the ‘plus’ side of the scale. Here, the
sunlit fern was about one stop brighter than a standard midtone.