Canon EOS 700D User Manual download pdf (Page 113)

113

f: Changing the Depth of Field

When using an aperture with a high f/number or shooting in low

light scenes, note that camera shake can occur.

A higher aperture f/number will make the shutter speed slower.

Under low light, the shutter speed can be as long as 30 sec. In such

cases, increase the ISO speed and hold the camera steady or use a

tripod.

The depth of field depends not only on the aperture, but also on

the lens and on the subject distance.

Since wide-angle lenses have a wide depth of field (range of

acceptable focus in front of and behind the point of focus), you need

not set a high aperture f/number to obtain a sharp picture from the

foreground to the background. On the other hand, a telephoto lens

has a narrow depth of field.

The closer the subject, the narrower the depth of field. A farther

subject will have a wider depth of field.

Set the aperture so that the shutter speed display does not

blink.

If you press the shutter button halfway and change

the aperture while the shutter speed is displayed,

the shutter speed display will also change to

maintain the same exposure (amount of light

reaching the image sensor). If you exceed the

adjustable shutter speed range, the shutter speed

display will blink to indicate that the standard

exposure cannot be obtained.

If the picture will be too dark, the “30"” (30 sec.) shutter speed

display will blink. If this happens, turn the <6> dial to the left to set

a lower aperture f/number or increase the ISO speed.

If the picture will be too bright, the “4000” (1/4000 sec.) shutter

speed display will blink. If this happens, turn the <6> dial to the

right to set a higher aperture f/number or decrease the ISO speed.

Shooting Tips

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Canon EOS 700D User Manual Page 113