EF400mm f/4 DO IS USM
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Instruction
a Safety Precautions
T
his device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Do not make any changes or modifications to the equipment
unless otherwise specified in the instructions. If such changes or
modifications should be made, you could be required to stop
operation of the equipment.
This equipment has been tested and found to comply with the limits
for a class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmfl interference in a residential installation. This equipment
generes, uses and can radiate radio frequency energy and, if not
alled and used in accordance with the instructions, may cause
hrmful interference to radio communications.
a Safety Precautions
• Do not look at the sun or a bright light source
through the lens or camera. Doing so could result in
loss of vision. Looking at the sun directly through the
lens is especially hazardous.
• Whether it is attached to the camera or not, do not
leave the lens under the sun without the lens cap
attached. This is to prevent the lens from concentrating
the sun’s rays, which could cause a fire.
• Do not stand on the lens case. Falling off the case
could result in injury.
• Do not stack lens cases. A falling lens case could
cause an injury.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
Handling Cautions
• If the lens is taken from a cold environment into a
warm one, condensation may develop on the lens
surface and internal parts. To prevent condensation
in this case, first put the lens into an airtight plastic bag
before taking it from a cold to warm environment. Then
take out the lens after it has warmed gradually. Do the
same when taking the lens from a warm environment
into a cold one.
• Increase the separation between the equipment and receiver.
•
Consult the dealer or an experienced radio/TV technician for help.
This Class B digital apparatus complies with Canadian ICES-003.
a Shooting Precautions
• Do not leave the lens in excessive heat such as in a
car in direct sunlight. High temperatures can cause
the lens to malfunction.
If a very bright spotlight like a mercury lamp is
photographed in a dark place with this lens, a
halo of light may occasionally appear around the
light source because of the DO elements.
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Nomenclature
Hood mount (→ 10)
Focusing ring (→ 5)
Focusing distance range selection switch (→ 5)
Distance scale (→ 6)
Strap mount (→ 4)
Drop-in filter (→ 12)
Rubber ring (→ 4)
AF stop button
(→ 6)
Contacts (→ 4)
Focus mode switch (→ 5)
Lens mount index (→ 4)
Image stabilizer switch (→ 7)
Tripod mount (→ 11)
Image stabilizer mode selector switch (→ 7)
Tripod collar index (→ 11)
Orientation locking knob (→ 11)
For detailed information, reference page numbers are provided in parentheses (→ **).
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1. Mounting and Detaching the Lens
See your camera’s instructions for details on
mounting and detaching the lens.
The lens mount has a rubber ring for enhanced
water- and dust-resistance. The rubber ring may
cause slight abrasions around the camera's lens
mount, but this will not cause any problems. If the
rubber ring becomes worn, it is replaceable by a
Canon Service Center at cost.
• After detaching the lens, place the lens with the
rear end up to prevent the lens surface and
electrical contacts from getting scratched.
• If the contacts get soiled, scratched, or have
fingerprints on them, corrosion or faulty
connections can result. The camera and lens
may not operate properly.
Attaching the strap
• If the contacts get soiled or have fingerprints on
them, clean them with a soft cloth.
• If you remove the lens, cover it with the dust
cap. To attach it properly, align the lens mount
index and the
K
index of the dust cap as shown
in the diagram, and turn clockwise. To remove it,
reverse the order.
Thread the end of the strap through the strap
mount on the lens and then back through the
clasp on the strap. Pull the strap tight and check
that there is no slack in the clasp.
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2. Setting the Focus
Mode
3. Switching the Focusing
Distance Range
To shoot in autofocus (AF) mode, set the focus
mode switch to AF.
To use only manual focusing (MF), set the focus
mode switch to MF, and focus by turning the
focusing ring. The focusing ring always works,
regardless of the focus mode.
You can set the focusing distance range to
5 m/11.5 ft. to infinity or 8 m/26.2 ft. to infinity.
By setting the suitable focusing distance range,
the actual autofocusing time can be shorter.
If you autofocus outside the set focusing distance
range, the lens may stop focusing at the start of
the focusing range; however, this is not a
malfunction. Press the shutter release button
halfway again.
After autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
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• The AF stop function also works in AI Servo AF
mode.
• By setting the camera's Custom Function, you
can change the AF stop button's function. For
details, see the camera's instruction manual.
4. AF Stop Button
5. Infinity Compensation Mark
Infinity compensation mark
During autofocus operation, you can press the
AF stop button to temporarily pause autofocus.
If the shutter button is still pressed halfway when
the AF stop button is released, autofocusing wi
continue as before.
Distance index
• With the EOS 630/600, RT, A2/A2E/5, or 10S/10
set to the AI Servo AF mode and continuous
shooting, AF will not resume even after you let
go of the AF stop button. Press the shutter
release button halfway to resume AF.
• With the EOS A2/A2E/5 and 10S/10 set to the
Sports mode, AF will not resume even after you
let go of the AF stop button. Press the shutter
release button halfway to resume AF.
To compensate for shifting of the infinity focus
point that results from changes in temperature.
The infinity position at normal temperature is the
point at which the vertical line of the L mark is
aligned with the distance indicator on the
distance scale.
For accurate manual focusing on subjects at
infinity distance, look through the viewfinder while
rotating the focusing ring.
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6. Image Stabilizer Settings
You can use the image stabilizer in AF or MF mode.
Set the STABILIZER switch
to
Select the stablizer mode.
When you press the shutter
button halfway, the Image
Stabilizer will start
.
• MODE 1rets vibrations
in aldirecs. It is mainly
effective for shooting still
subjects.
• MODE 2: It compensates for
vertical camera shake during
following shots in a horizontal
direction, and compensates for
horizontal camera shake
during following shots in a
vertical direction.
• If you are not going to use the
image stabilizer function, set
operating.
the switch to
.
• Make sure the image in the
viewfinder is stable, then press
the shutter button the rest of
the way down to take the
picture.
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7. Tips on Using the Image Stabilizer
The image stabilizer in this lens is effective for hand-held shots under the following conditions.
● MODE 1
● MODE 2
• In semi-darkened areas such as indoors or
outdoors at night.
• When panning subjects in motion.
• In locations where flash photography is
prohibited, such as art museums and theater
stages.
• In situations where your footing is uncertain.
• In situations where fast shutter settings cannot
be used.
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Tips on Using the Image Stabilizer
• The Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
DCS1, DCS3, D2000, D6000, EOS-1V/HS, EOS-
1N/DP/HS/RS, 3, ELAN 7E/ELAN 7/30/33, ELAN
7NE/ELAN 7N/30V/33V, ELAN II/ELAN IIE/50/50E,
REBEL X/REBEL XS/500, REBEL G/500N, REBEL
2000/300, REBEL Ti/300V, REBEL T2/300X, REBEL
K2/3000V, IX, IX Lite/IX7, 3000/88, 5000/888
• With the EOS-1V/HS, 3, ELAN 7E/ELAN
7/30/33, ELAN 7NE/ELAN 7N/30V/33V, ELAN
II/ELAN II E/50/50E, REBEL2000/300, IX, and
D30, the Image Stabilizer will not work during
self-timer operation.
•
Set the STABILIZER switch to
when you are
taking pictures using the Bulb setting (long
exposures). If the STABILIZER switch is set to
the image stabilizer function may introduce errors.
• The Image Stabilizer might not be fully effective
in the following cases:
,
•
•
You shoot while riding on a bumpy road.
You move the camera dramatically for a panning
shot in Mode 1.
•
You shoot using techniques other than following
shots in Mode 2.
• The Image Stabilizer consumes more power
than normal shooting, so fewer shots can be
taken if you use the function.
• When you use a tripod, the Image Stabilizer
should be turned off to save battery power.
• The stabilizer is equally effective for hand-held
photography and photography with a monopod.
• The Image Stabilizer function also operates
when the lens is used with the EF12 II or EF25
II Extension Tube, and the EF1.4X II Extender.
• Pictures may look distorted after being taken
depending on the camera, but this doesn't affect
shooting.
•
The image stabilizer operates for about two
seconds even when your finger is off the shutter
button. Do not remove the lens while the stabilizer
is in operation. This will cause a malfunction
.
•
With Extender EF2X II attached to the lens, the
Image Stabilizer will work with the following cameras:
EOS-1Ds Mark III, EOS-1Ds Mark II, EOS-1Ds, EOS-
1D Mark lll, EOS-1D Mark II N, EOS-1D Mark II, EOS-
1D, EOS 40D, 30D, 20D, 20Da, 10D, 5D, DIGITAL
REBEL XSi/450D, DIGITAL REBEL XTi/400D
• If you set the camera’s Custom Function to
change the assigned button to operate the AF,
the Image Stabilizer will operate when you press
the newly assigned AF button.
DIGITAL, DIGITAL REBEL XT/350D DIGITAL,
DIGITAL REBEL/300D DIGITAL, D60, D30, EOS
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8. Hood
The dedicated Lens Hood ET-120 helps to
prevent stray light from entering the lens and
protects the front of the lens from rain, snow or
dust.
To attach the hood, loosen the hood locking knob
by turning it counterclockwise. Fit the hood onto
the lens hood mount, and tighten the locking
knob to fix it in place. Use the same procedure,
in reverse, to remove the hood.
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9. Using the Tripod Mount
Adjusting the Revolving Mount
You can loosen the orientation lock-knob on the tripod mount to allow it to rotate as needed to fit a
particular camera model for switching between vertical and horizontal positions.
Detaching
First remove the lens from the camera and then remove the tripod mount from the lens as shown
below. To attach the tripod mount, reverse the procedure.
Loosen the orientation
locking knob.
Rotate the tripod mount and
align the mounting indicator
on the tripod mount with the
one on the lens.
Slide off the tripod collar
away from the rear of the
lens.
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10.Drop-In Filters
The lens comes with the drop-in Gelatin Filter
Holder 52 holding a glass filter. The holder
accepts commercially-available gelatin filters.
Using a Gelatin Filter
14mm
14mm
47mm
47mm
Removing and Installing
To remove the drop-in filter, press in the left and
right lock buttons and pull the filter holder straight
up out of the slot.
Lift up the holder’s retaining frame
Trim the gelatin filter as shown in the figure,
and mount it in the holder.
To install the drop-in filter, push the filter holder
Return the retaining frame to its closed
position.
straight down into the slot until it clicks into place.
.
• The filter holder can be installed facing either forwards
or backwards.
The Drop-In Screw-Type Filter Holder 52 and
Drop-In Circular Polarizing Filter PL-C52 are also
available (Sold separately).
Because the lens optics are designed to include a
glass filter, you must always install the filter
holder, even if no gelatin filter is fitted.
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11.Extenders
(Sold separately)
With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follows:
Item
With EF1.4X ll Extender
With EF2X ll Extender
Focal length (mm)
Aperture
560
f/5.6 – 45
4°25’
800
f/8 – 64
3°5’
Diagonal
Vertical
Angle of view
2°25’
1°40’
2°35’
0.24
Horizontal
3°40’
Maximum magnification (×)
0.17
• First attach the Extender to the lens, then attach lens to the camera. Detach it from the
camera in the reverse order. If you attach the lens o the camera first, misoperation may
occur.
•
With Extender EF2X II attached to the lens, only manual focus is possible. However, with the EOS-
1Ds Mark III, EOS-1Ds Mark ll, EOS-1Ds, EOS-1D Mark lll, EOS-1D Mark ll N, EOS-1D Mark ll,
EOS-1D, EOS-1V/HS, EOS-3 camera, autofocusing with the center focusing point is possible.
• If you use an Extender on the lens mounted on a EOS A2/A2E/5, set the exposure
compensation to -1/2 stop for the EF1.4X II or -1 stop for the EF2X II.
• Only one Extender can be attached to the lens and camera.
• Autofocusing is still enabled with Extender EF1.4X II attached.
• When an Extender is attached, the AF speed will become slower by design to retain proper
AF control.
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12.Extension Tubes
(Sold separately)
13.Case
You can attach Extension Tube EF12 II or EF25
II for magnified shots. The shooting distance and
magnification are shown below.
Belt
Camera-to-Subject
Magnification
Distance (mm)
Lid
Near
2870
2424
Far
Near
0.16×
0.20×
Far
EF12 II
EF25 II
13384
6549
0.03×
0.07×
Keyhole
Lever
Manual focusing is recommended for accurate
focusing.
When putting the lens into its case, follow the
procedure below.
Attach the hood in reverse, then attach the
lens cap.
Position the tripod mount straight upwards
and lay the lens into the case.
Secure the lens with the belt.
Press the lever while holding the lid from the
top, and lock it.
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Specifications
Focal Length & Max. Aperture
Lens Construction
Min. Aperture
400mm, f/4
17 elements in 13 groups
f/32
Angle of View
Diagonal: 6°10’
3.5 m
Vertical: 3°30’
Horizontal: 5°10’
Min. Focusing Distance
Max. Magnification & Field of view 0.12×, 197 × 296mm/7.7× 11.6 inch (at 3.5 m)
Filter
Drop-in 52-series
128 dia. × 232.7mm/5 dia. × 9.1 inch
1940g/67.9oz
Max. Diameter & Length
Weight
Lens Hood
Lens Cap
Case
ET-120
ET-145
Lens Case 400B
• The lens length is measured from the mount surface to the front end of the lens. Add 26.5 mm when including the
lens cap and dust cap.
• The size and weight listed are for the lens only, except as indicated.
• Closeup Lenses 250D/500D cannot be attached.
• Aperture settings are specified on the camera.
• All data listed is measured according to Canon standards.
• Product specifications and appearance are subject to change without notice.
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© CANON INC. 2002
CT1-7531-006
2009.7
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