Canon Eos 3 Owners Manual

51
7. When Autofocus Fails
Autofocus can fail to achieve focus (the in-focus indicator blinks) wi\
th
certain subjects such as the following:
(a) Low-contrast subjects.
(b) Subjects in low light.
(c) Extremely backlit or reflective subjects.
(d) Overlapping near and far objects.
In such cases, do one of the following:
(1)Focus an object at the same distance as the subject and lock the
focus before recomposing.
(2) Set the lens focus mode switch to  MF(or Mon older lenses) and
focus manually.
• You can...

8. Manual Focusing
When it is difficult to autofocus, focus manually as described below.Set the lens focus mode switch to
MF(or Mon older lenses).
• The AF mode indicator on the LCD panel
turns off.
Turn the lens focusing ring until the
subject is in focus in the viewfinder.
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Metering Modes
The basic metering modes are evaluative, partial, spot, and
centerweighted averaging. Spot metering can be at the center of the
viewfinder or linked to the active focusing point. There is also multi-s\
pot
metering. Select the metering mode which suits the subject or your
photographic intention.
First set the < > switch to < >. If
necessary, also set the < > switch to
.
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Evaluative metering
Partial metering
Spot metering
Centerweighted
averaging metering
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1. Selecting a Metering Mode
While pressing the < > button,
turn the < > dial until the
desired metering mode icon
appears.Evaluative
Partial Spot
Centerweighted averaging
Release the < > button.
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2. Metering Modes
Evaluative Metering ( )
This is an all-around metering mode
suited even for backlit subjects. The
viewfinder is divided into 21 metering
zones. All the focusing points are
linked to the evaluative metering
zones. After detecting the main
subject’s size, position, brightness,
background, front and back lighting,
etc., the camera sets the proper
exposure.
•In the manual focusing ( MFor M) mode,
evaluative metering centers on the center
focusing point.
• If the subject brightness and...

Metering Modes
Centerweighted Metering
()
The metering is weighted at the center
and then averaged for the entire
scene.
Focusing Point-Linked
Spot Metering
With Custom Function CF-13, you can
limit the manually- and eye-selectable
focusing points to only 11 of the 45.
This makes focusing point selection
faster. Spot metering (about 2.4% of
the viewfinder area) is also linked to
the eye-selected or manually-selected
focusing point.
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Custom Function CF-13 can limit the manually- and eye-selectable...

Metering Modes
Multi-Spot Metering
Multiple spot meter readings can be taken and then averaged
automatically.  Up to eight spot meter readings can be taken for one
picture.
The following procedure is for taking the sample photo below.Set the metering mode to spot
metering. (See “Selecting a
Metering Mode” on page 54.)
Aim the focusing point on a
shadow portion (1) and press the
 button to take a spot meter
reading.
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Aim the focusing point on a mid-
tone portion (2) and press the

 button. Then aim the...

Metering Modes
Each time a spot meter reading is taken, the spot meter readings taken s\
o
far are averaged and the result (shutter speed and aperture) is displa\
yed
below the viewfinder. See the figure on the next page for “Multi-Spot\
Metering Display.” On the exposure compensation scale on the right of\
the viewfinder, the exposure level indicator moves around in real-time t\
o
indicate the spot meter reading’s current exposure level. Each spot m\
eter
reading is also indicated on the scale with a...

Metering Modes
●The exposure settings obtained with multi-spot meter readings are
canceled in the following cases:
1. After a spot meter reading is taken, 16 seconds elapse.
2. You press the < >, < >, or < > button.
3. After taking the picture, you release the shutter button.
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Up to eight spot meter readings can be taken for one picture. If you pre\
ss the < >
button to try and take a ninth spot meter reading, no spot meter reading\
 will register.
Multi-spot metering can be fixed at the center or...

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