Canon EOS 20D Instruction Manual
SSelecting the AF PointN
68
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Press the <
S> and turn the <6>
or <
5> dial.
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When you turn the dial, the selection will go
in the looping sequence shown on the left.
in the looping sequence shown on the left.
Under low-light conditions, the built-in flash fires a brief burst of flashes
when you press the shutter button halfway. This is to illuminate the
subject to enable easier autofocusing.
when you press the shutter button halfway. This is to illuminate the
subject to enable easier autofocusing.
The EOS 20D will execute high-precision AF with lenses whose
maximum aperture is f/2.8 or larger.
maximum aperture is f/2.8 or larger.
With lenses whose maximum aperture is f/2.8 or larger
With the center AF point, high-precision, cross-type AF sensitive to both
vertical and horizontal lines is possible. With cross-type AF, vertical-line
detection is twice as sensitive as horizontal-line detection. The other
eight AF points are horizontal-line sensitive or vertical-line sensitive.
With the center AF point, high-precision, cross-type AF sensitive to both
vertical and horizontal lines is possible. With cross-type AF, vertical-line
detection is twice as sensitive as horizontal-line detection. The other
eight AF points are horizontal-line sensitive or vertical-line sensitive.
With lenses whose maximum aperture is larger than f/5.6
The center AF point is a cross-type AF sensor. The other eight AF
points are horizontal-line sensitive or vertical-line sensitive.
The center AF point is a cross-type AF sensor. The other eight AF
points are horizontal-line sensitive or vertical-line sensitive.
Selecting with the Dial
AF-Assist beam with the Built-in Flash
Lens’ Maximum Aperture and AF Sensitivity
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When looking at the LCD panel to select the AF point, note the following:
Automatic selection
Automatic selection
, center
, right
,
top
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If focus cannot be achieved with an EOS-dedicated, external Speedlite’s
AF-assist beam, select the center AF point.
AF-assist beam, select the center AF point.
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In the <
3> <5> <7> modes, the AF-assist beam does not light.
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The built-in flash’s AF-assist beam is effective up to about 4 meters/13.2 feet.
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In the Creative Zone modes when the built-in flash is popped up with the
<I> button, the AF-assist beam will be emitted if necessary.
<I> button, the AF-assist beam will be emitted if necessary.