Canon EOS 30D Instruction Manual

S

 Selecting the AF PointN

78

 

Press the <S> button, then turn the 
<6> dial or <5> dial to select the 
AF point in the looping sequence 
shown on the left.

Under low-light conditions, when you press the shutter button halfway, 
the built-in flash fires a brief burst of flashes. It illuminates the subject to 
enable easier autofocusing.

The EOS 30D’s AF sensor has nine AF points. The center AF point is a 
high-precision, cross-type sensor sensitive to both vertical and 
horizontal lines of the subject. The top and bottom AF points are vertical 
line-sensitive, and the remaining six AF points are horizontal line-
sensitive AF points.
With f/2.8 and faster lenses,* the vertical line-sensitive sensor at the 
center AF point will also function to attain high-precision focusing.
* 

Except with the EF28-80mm f/2.8-4L USM and EF50mm f/2.5 Compact Macro lenses.

 

When looking at the LCD panel to select the AF point, note the following:
Automatic selection 

, center 

, right 

, 

top

 

If focus cannot be achieved with an EOS-dedicated, external Speedlite’s 
AF-assist beam, select the center AF point.

 

In the <3> <5> <7> modes, the AF-assist beam does not light.

 

The built-in flash’s AF-assist beam is effective up to about 4 meters/13.2 
feet.

 

In the Creative Zone modes when you pop-up the built-in flash with the 
<I> button, the AF-assist beam will be fired when necessary.