Canon lens EF 100400mm f4556L IS USM User Manual

							EF100-400mm EF100-400mm 
f/4.5-5.6L IS USMf/4.5-5.6L IS USM
Instruction
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The Canon EF100–400mm f/4.5–5.6L IS USM
lens is a high-performance telephoto zoom lens
for EOS cameras.
●“IS” stands for Image Stabilizer.
● “USM” stands for Ultrasonic Motor.
Features
1. The Image Stabilizer gives the equivalent
effect of a shutter speed two stops* faster. A
second image stabilizer mode that is
optimized for continuous shooting (MODE 2)
is provided.
2. Fluorite and super UD lens elements for truly exceptional imaging capability.
3. Ultrasonic motor (USM) for fast, quiet autofocus.
4. Manual focusing is available after the subject comes into focus in autofocus mode (ONE
SHOT AF).
5. Adjustable zoom ring touch lets you lock at any focal length.
6. Can be used with EF1.4× II/EF2×II
extenders.
* Based on [1/focal length] second. 
Generally, it requires a shutter speed [1/focal length]
second or faster to prevent camera shake.Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
Thank you for purchasing a Canon product.
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.
● Do not leave the lens in excessive heat such as in a
car in direct sunlight.  High temperatures can cause
the lens to malfunction.
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aSafety Precautions
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications.
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.
• 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 Precautions for shooting with EOS-1N RS• When using this lens to shoot with EOS-1N RS, use –2/3 step
or –1/2 step exposure compensation.This 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 harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
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.
●Do not point the lens or camera at the sun or
photograph it. This is because the lens concentrates
the sun’s rays even when the sun is outside the image
area or when shooting with backlight, which could cause
malfunction or fire.
●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.
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Nomenclature
STABILIZER
STABILIZERMODESMOOTH
TIGHT
21
6.5m
MF AF
1.8m
CANONZO OMLENSC10
0F
100
135
150
OFF
ON
For detailed information, reference page numbers are provided in
parentheses (→
**).
Hood mount
(→12)
Filter mounting
thread ( →12)
Zoom ring 
(→ 6)
Focusing ring ( →4)
Image stabilizer switch ( →7)
Image stabilizer mode selector switch ( →7)
Zoom position index
Focus mode switch ( →4)
Distance scale 
(→ 10)
Lens mount index 
(→11 )
Contacts
(→ 4)
Zoom touch adjustment ring ( →6)
Focusing distance range
selector switch ( →5)
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See your camera’s instructions for details on
mounting and detaching the lens.
To  shoot in autofocus (AF) mode, set the focus
mode switch to AF.
To   shoot in manual focus (MF) mode, set the
focus mode switch to MF, and focus by turning
the focusing ring. The focusing ring always
works, regardless of the focus mode.
1. Mounting and Detaching the Lens2. Setting the FocusMode
AF
MF
● After detaching the lens, place the lens with the
rear end up to prevent the lens surface and
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. 
● 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 

index of the dust cap as shown
in the diagram, and turn clockwise. To remove it,
reverse the order.
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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3.Switching the Focusing
Distance Range
You can set the focusing distance range to 1.8
m/5.9 ft. to infinity or 6.5 m/21.3 ft. to infinity. By
setting the suitable focusing distance range, the
actual autofocusing time will be shorter.
1.8m6.5m
If you use AF from outside the specified focusing
distance range, the lens may stop focusing when it
reaches the limit of the range. This is not a
malfunction. If this occurs, press the shutter button
halfway down again.
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4. Adjusting Zooming Resistance
Move the zoom ring forward or backward to
zoom.Y
ou can adjust the zoom ring “touch”
(resistance) as needed by holding the focusing
ring in place and turning the zoom touch
adjustment ring.
● Be sure to finish zooming before focusing.
Changing the zoom ring after focusing can affect
the focus.
● To   prevent unintended extension of the front of
the lens, be careful not to set the zoom ring too
loose.
T urn the zoom touch adjustment ring towards the
word SMOOTH to reduce the zooming touch, or
towards TIGHT to increase it. To lock the zoom
ring in place, turn the zoom touch adjustment ring
towards TIGHT until it stops.
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STABILIZER
ON OFF
When you press the shutter
button halfway, the Image
Stabilizer will start operating. 
●Make sure the image in the
viewfinder is stable, then
press the shutter button the
rest of the way down to take
the picture.
5. Image Stabilizer
You can use the image stabilizer in AF or MF mode.
Set the STABILIZER switch
to ON.
● If you are not going to use the
image stabilizer function, set
the switch to OFF.
Select the stabilizer mode.
●MODE 1: Corrects vibrations
in all directions. It is mainly
effective for shooting still
subjects.
● MODE 2: Corrects vertical
camera shake during
following shots in a horizontal
direction, and corrects
horizontal camera shake
during following shots in a
vertical direction.
12
STABILIZER
MODE
STABILIZER
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6. Tips on Using the Image Stabilizer
●In semi-darkened areas such as indoors or outdoors
at night.
● 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.
The image stabilizer in this lens is effective for hand-held shots under the following conditions.
●When panning subjects in motion.
●MODE 1 ●MODE 2
OFF
ONOFF
ON
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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.
● Set the STABILIZER switch to OFF when using the
camera on a tripod. If the switch is set to ON, the
Image Stabilizer may introduce errors.
● Set the STABILIZER switch to OFF when you are
taking pictures using the Bulb setting (long
exposures). If the STABILIZER switch is set to ON,
the image stabilizer function may introduce errors.
● The Image Stabilizer might not be fully effective in
the following cases:
•You shoot from a violently moving vehicle.
•Y ou move the camera dramatically for a panning
shot in Mode 1.
•Y ou 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.
● 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 the EOS-1V/HS, 3, ELAN 7E/ELAN 7/30/33,
ELAN 7NE/ELAN 7N/30V/33V, ELAN II/ELAN II
E/50/50E, REBEL 2000/300, IX, IX Lite/IX7, and
D30, the Image Stabilizer will not work during self-
timer operation.●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 an extension tube EF12 II or
EF25 II.
● When using extender EF1.4× II/EF2×II, you can
use the Image Stabilizer with the following cameras:
EOS-1Ds Mark III, EOS-1Ds Mark II, EOS-1Ds,
EOS-1D Mark III, EOS-1D Mark II N, EOS-1D Mark
II, EOS-1D, EOS 40D, 30D, 20D, 20Da, 10D, 5D,
EOS DIGITAL REBEL XSi/EOS 450D, EOS
DIGITAL REBEL XTi/400D DIGITAL, EOS DIGITAL
REBEL XT/350D DIGITAL, EOS DIGITAL
REBEL/300D DIGITAL, EOS D60, D30, EOS 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 II E/50/50E,
3000/88, REBEL XS/500, REBEL 2000/300, REBEL
T i/300V, REBEL T2/300X, REBEL K2/3000V, IX, IX
Lite/IX7
● Depending on the camera there may be image
shake, such as after releasing the shutter. However,
this does not affect shooting.
● 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.
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