Canon 1100D manual AvChangingtheDepthofField

Av:ChangingtheDepthofField

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When using an aperture with a high f/number, note that camera shake can occur in low light scenes.

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.

And 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 < _

> 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

< _ > dial to the

right to set a higher

aperture

f/number

or decrease the ISO speed.

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