Canon EOS 30D Instruction Manual

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Four metering modes are provided: Evaluative, partial, spot, and 
center-weighted average metering. In the Basic Zone modes, 
evaluative metering will be set automatically.
1
Press the <Q> button. 
(9)
2
Select the metering mode.
 
While looking at the LCD panel, turn 
the <6> dial.
q
: Evaluative metering
w
: Partial metering
r
: Spot metering
e
: Center-weighted average
metering
q
 Evaluative metering
This is the camera’s standard metering mode suited for most 
subjects even under backlit conditions. After detecting the 
main subject’s position, brightness, background, front and 
back lighting, etc., the camera sets the proper exposure.
w
 Partial metering
Effective when the background is much brighter than the 
subject due to backlighting, etc. Partial metering covers 
about 9% of the viewfinder area at the center. The area 
covered by partial metering is shown on the left.
r
 Spot metering
This is for metering a specific part of the subject or scene. 
The metering is weighted at the center covering about 
3.5% of the viewfinder area. The area covered by spot 
metering is shown on the left.
e
 Center-weighted average metering
The metering is weighted at the center and then averaged 
for the entire scene.
q
 Selecting the Metering ModeN