Canon 600D manual Shooti.gTip

Av : Changing the Depth of Field

shooti.gTip

®_ 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.

97