Canon Eos 1 Instruction Manual

							●Focus Lock
When you want to compose a scene with the main subject positioned out
of the zone covered by the five focusing points, follow the procedure
below to first lock the focus on the subject before composing the scene
and taking the picture.
• The focus lock function is available only in One-shot AF mode.(Refer to “2.
Selecting the AF Mode” on page 32.)     
31
Selecting the Five Focusing Points
1Cover the subject with the selected
focusing point and press the shutter
button halfway to focus the subject.
2Keeping the shutter pressed
halfway,recompose the picture as
desired.
3Press the shutter button completely
to take the picture.
The exposure settings are determined when the subject is focused. If the\
 subject bright-
ness changes after you lock the focus, the subject may not be properly e\
xposed. For infor-
mation on different types of metering, refer to page 37.      
This custom function lets you lock the
exposure with the shutter button instead
of the AE lock button ( ). Pressing the
AE lock button activates autofocusing.     Custom Function 
(Refer to pages 84–85)
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The shutter will not release if the in-focus indicator is blinking. Try \
refocusing the subject
on an alternate subject with higher contrast at approximately the same d\
istance, or use
manual focusing (refer to “3. Difficult Subjects for Autofocus” o\
n page 34).      
2. Selecting the AF Mode 
Two types of autofocus are available: One-shot AF and AI Servo AF.
Select the mode most appropriate for the subject and shooting situation.\
•To use the camera’s AF modes, the lens’ focus mode switch must be \
set to“AF”.
1While pressing the AF mode selec-
tor, turn the main dial to the left or
right until the desired AF mode
appears in the LCD panel.
2Release the AF mode selector.    
● One-Shot AF
Use this mode with stationary subjects.
The shutter will not release if the sub-
ject is not in focus, preventing out-of-
focus shots. When the shutter button is
pressed halfway and the subject is
focused, the corresponding focusing
point lights red in the viewfinder, and
the in-focus indicator ( ●) lights up in
the viewfinder. 
• In evaluative metering mode, the shutter
speed and aperture value are deter-
mined at this time, and by keeping the
shutter button pressed halfway, the focus
and exposure settings remain locked,
allowing you to recompose the picture as
desired.    
ONE SHOT
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AF
ISOMODE
ONE SHOT
ONE SHOT
AI SERVO
In-focus Indicator
Focusing points
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Selecting the AF Mode 
●AI Servo AF
Use this mode when taking pictures of
moving subjects. The lens focuses the
subject continuously while the shutter
button is pressed halfway. AI Servo’s
predictive focus control* can track sub-
jects moving toward or away from the
camera. Exposure is determined
immediately before the shutter is
released.    
In AI Servo AF mode, this function lets
you select the focusing point with the
quick control dial to manually track the
moving subject.       
* Predictive focus control
Predictive focus continuously measures the distance and speed of a sub-
ject that is moving at a relatively constant velocity, and then predicts\
 the
subject position so that the subject will be sharply focused at the inst\
ant of
exposure.
When using a manually selected focusing point, it is used for predictive\
focusing and lights red in the viewfinder.
In automatic focusing point selection mode, cover the subject with the
center focusing point for initial focusing. After that, even if the subj\
ect
moves to a different focusing point, the camera’s predictive focus fu\
nction
will continue to track the subject as long as it is covered by one of th\
e
focusing points. The focusing point does not light up.     
AI SERVO
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• In AI Servo AF mode, the viewfinder’s in-focus indicator does not lig\
ht up and the beep-
er does not beep even when the subject is in focus.
• The in-focus indicator blinks if the subject cannot be focused.
• Focus lock cannot be used in this mode, but autofocus can be temporarily\
 suspended
through Custom Function 4-2 (refer to pages 86–87).     
Custom Function 
(Refer to pages 90–91)
Custom Function 
(Refer to pages 86–87)
In AI Servo AF mode with predictive
focusing (used for sports photography,
etc.), this function lets you momentarily
lock the focus using the AE lock button.
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This camera’s autofocus system is very accurate and can quickly focus\
most subjects with the high-precision Multi-BASIS (Base-Stored Image
Sensor) AF sensor equipped with five focusing points as shown below.
However, the system may have difficulty focusing the subjects listed
below. When autofocus is impossible, the green in-focus indicator will
blink in the viewfinder.    
3. Difficult Subjects for Autofocus
(a)Low contrast subjects (misty scenes,
light-colored or white objects)
(b) Subjects in extremely low-light situa-
tions (a dark room, night scenes)
(c) Subjects in extremely strong backlight, or with bright spectral reflections (shiny
metal, snow, ice, surface of a lake)
(d) Subjects with an object in front of them (caged zoo animals)
(e) Subjects having generally horizontal
patterns (only when using the center
focusing point, when using lenses with
maximum aperture smaller than f/2.8)
(f) Subjects having generally vertical pat-
terns (only when using focusing points
other than the center)
Focus these subjects as follows:
1)Particularly with subjects such as (a),
focus on a substitute subject at the same
distance from the camera as your main
subject, then recompose the picture
using the focus lock function.
2)
In the case of (e), there is no problem
when using a lens with a maximum aper-
ture of f/2.8 or larger (except the
EF50mm f/2.5 Compact Macro or EF28-
80mm f/2.8-4L) because the camera’s
central cross-sensor activates to detect
horizontal lines. However, when using a
lens with a maximum aperture smaller
than f/2.8, we recommend to use the
focusing points other than the center that
(a)
(b)
Cross-sensor
• Position of invidual sensor of BASIS
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Difficult Subjects for Autofocus
have vertical sensors, focus the subject,
then recompose the picture using the
focus lock function.
3) In the case of (f), use the center focusingpoint which has a horizontal sensor,
focus the subject, then recompose the
picture using the focus lock function.
4) Set the lens’ focus mode switch to “ M”
and manually focus the subject.
• See “4. Manual Focusing” on page 36
for manual focusing instructions.    
(d)
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							36
AF
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CANONLENS
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4. Manual Focusing
Use manual focusing when the subject is difficult to focus with the cam-\
era’s autofocus system, or when you need to control the focus for alt\
erna-
tive focus effects.    
1Set the lens’ focus mode switch to
“M ”.
• The AF mode display is extinguished
in the LCD panel.
2While pressing the shutter button
halfway and looking through the
viewfinder, turn the lens’ manual
focusing ring until the subject
appears sharp. 
•When the focus mode is switched from
“AF ” to “ M”, the focusing point and in-
focus indicator in the viewfinder light
when the subject is in focus.      
● Full-time Manual Focusing with USM (Ultrasonic Motor) Lenses
USM lenses are equipped with a full-time manual focusing function that
lets you immediately manually adjust the focus after autofocusing is com\
-
pleted to achieve the desired effect. Use this function in One-shot AF
mode.
•T his method of focus adjustment cannot be used if your USM lens does not
have a distance scale.        
MODE
AF ISO
AF
M
22 2250mm
N
AF
M
When using a USM lens equipped with an
electronic manual focusing system, setting
this custom function will allow manual focus-
ing only when the lens’ focus mode switch is
set to “ M”.  Custom Function 
(Refer to pages 86–87)
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5. Selecting the Metering Mode
Three metering modes are available: evaluative metering ( ), partial
metering ( ) and fine spot metering ( ). Center-weighted average
metering as well as spot metering linked to the focusing points can also\
be set with the corresponding custom function. In all metering modes,
pressing the shutter button halfway activates the built-in metering syst\
em
and determines the exposure.
Whether outdoors, indoors, at the sea or in the mountains, there is an i\
nfi-
nite number of lighting conditions and subject types. Select the meterin\
g
mode best suited for each subject.      
AI SERVO
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1While pressing the metering mode
selector, turn the main dial to the left
or right until the desired metering
mode indicator appears in the LCD
panel.     
Metering mode indicator
2Release the metering mode selec-
tor.
AFISOMODE
ONE SHOT
•
The metering mode changes in the
cyclical sequence shown above.
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Selecting the Metering Mode
●Evaluative Metering ( )
Use this mode for general subjects
and backlit scenes. By dividing the
viewfinder into 16 metering zones
linked with the five focusing points, the
camera evaluates factors such as sub-
ject size, position (based on the focus-
ing point in use), brightness, back-
ground, front lighting and back lighting
to determine the best exposure setting.
In manual focusing mode, evaluative
metering is based on the central focus-
ing point.
•When the subject is lit by strong backlight-
ing or a narrow beam of light such as a
spotlight, we recommend using partial
metering 
()or fine spot metering ().
● Partial Metering ( )
This mode limits the metering area to
the central part of the viewfinder
(approx. 9% of the image area). Select
this mode when the subject is backlit
or positioned near a strong light
source.       
This function lets you select center-weighted
average metering instead of evaluative meter-
ing 
().       (Refer to pages 88–89)
Custom Function 
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Selecting the Metering Mode
●Fine Spot Metering ( )
This mode limits the metering area to
the center of the viewfinder as defined
by the fine spot metering mark
(approx. 2.3% of the image area). Use
this mode when you need an accurate
exposure reading of a specific subject
area.
• In continuous shooting mode ( ) or
high - speed continuous shooting mode
with the Power Drive Booster E1 (
,), the exposure value deter-
mined for the first frame is also used for
the second and consecutive exposures.
This function lets you select spot meter-
ing linked to the focusing points. Metering
is limited to the area of the manually
selected focusing point (approx. 3.5% of
the viewfinder image area).    
In One-shot AF mode, exposure setting is locked during continuous shooti\
ng, but the AE
lock indicator “ ” does not light in the viewfinder.     
Custom Function 
(Refer to pages 90–91)
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6. AE Lock
The EOS-1 Ns evaluative metering system is coupled to the five focusing\
points. It controls the exposure according to the subjects position, ba\
sed
on the focusing point in use.
If you want to determine the exposure independently from the focusing
operation, use AE lock. Use it when you also want to change the compo-
sition of the picture after determining the exposure. AE lock is effecti\
ve for
backlit subjects and other situations where there is extremely strong co\
n-
trast between the subject and background.    
1Focus the subject that you want to
measure with the camera’s metering
system.
•The exposure values are displayed in
the viewfinder and LCD panel.
2Press the AE lock button ( ).
•“ ” lights in the viewfinder to indi-
cate that the AE lock is set. When you
release the AE lock button ( ), the
metering timer is activated and the
exposure remains locked for six sec-
onds.
• Pressing the AE lock button ( )
again renews the locked exposure set-
ting.
• AE lock is canceled six seconds after
the AE lock indicator ( ) lights in the
view finder display, or whenever you
press the AF mode selector, metering
mode selector, shooting mode selector
or focusing point selector.     
To accurately meter a specific subject area with the AE lock function, w\
e recommend
using partial metering or fine spot metering. Place the subject in the c\
enter of the viewfind-
er when activating AE lock.      
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