Canon EF-S55-250mm f/4-5.6 IS II User manual

EF-S55-250mm f/4-5.6 IS STM
Instructions
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Thank you for purchasing a Canon product.
The Canon EF-S55-250mm f/4-5.6 IS STM is
a high-performance telephoto zoom lens that
makes movie shooting comfortable. The lens
is equipped with an Image Stabilizer and has
been developed for EOS cameras compatible
with EF-S lenses*.
 "IS" stands for Image Stabilizer.
 "STM" stands for stepping motor.
Features
1. Improved Movie Shooting Functions
• Stepping motor with lead screws achieves quiet,
smooth Movie Servo AF. *1
* Only the following EOS cameras are compatible
with EF-S lenses (as of July 2013):
EOS 7D, EOS 60D, EOS 60Da, EOS 50D, EOS
40D, EOS 30D, EOS 20D, EOS 20Da, EOS
REBEL T5i/700D, EOS REBEL SL1/100D, EOS
REBEL T4i/650D, EOS REBEL T3i/600D, EOS
REBEL T2i/550D, EOS REBEL T1i/500D, EOS
REBEL XSi/450D, EOS REBEL T3/1100D, EOS
REBEL XS/1000D, EOS DIGITAL REBEL XTi/400D
DIGITAL, EOS DIGITAL REBEL XT/350D DIGITAL,
EOS DIGITAL REBEL/300D DIGITAL, EOS M
(when using with Mount Adapter EF-EOS M)
2. High-speed, quiet Autofocusing achieved during
viewnder shooting.
3. UD lens elements for excellent imaging performance.
4. Equipped with an Image Stabilizer that provides
an image stabilization effect equivalent to a shutter
speed 3.5 stops*2 faster (telephoto end, when
used with the EOS 7D). The Image Stabilizer also
provides optimal image stabilization that responds
to shooting conditions (such as shooting still
subjects and following shots).
5. Electronic manual focusing (MF) made possible by
electronically detecting the rotation of the focusing ring.
6. Manual focusing is available after the subject comes
into focus in autofocus mode (ONE SHOT AF).
7. Circular aperture for producing beautiful
softfocus images.
*1: Function compatible with the following camera (as
of July 2013):
EOS REBEL T5i/700D, EOS REBEL SL1/100D,
EOS REBEL T4i/650D, EOS M (when using with
Mount Adapter EF-EOS M)
*2:
Image stabilization performance based on CIPA
(Camera & Imaging Products Association) Standards.
During actual shooting, image stabilization
performance varies depending on the amount of
camera shake, shooting conditions, and other factors.
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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 re.
Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
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, rst 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.
Usage Precautions
 When using this lens with an EOS REBEL T4i/650D
camera, please be sure to update the camera’s
rmware to version 1.0.4 or later.
 If the EOS REBEL T4i/650D rmware is an earlier
version than 1.0.4, there is a slight chance that the
camera will stop operating. If this occurs, please remove
the battery temporarily and insert it again for correct
camera operation.
 For information on rmware updates, please check the
Canon website.
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Safety Precautions
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 modications to the equipment
unless otherwise specied in the instructions. If such
changes or modications 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 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.
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Shooting Precautions
The EF-S55-250mm f/4-5.6 IS STM utilizes a stepping motor that drives the focus lens. The motor
also controls the focus lens during zooming.
1. When the camera is OFF
The motor does not operate while the camera is OFF or when the camera is OFF due to the use of the auto power
off function. Therefore, users must be aware of the following points.
 Manual focus adjustments are not possible.
 During zooming, delayed focus will occur.
2. When the lens is in sleep mode
If not operated for a certain period of time, this lens will enter sleep mode in order to save power. Sleep mode
differs from when the camera is OFF due to the use of the auto power off function. In this state, the motor will not
operate even if the camera is ON. Therefore, users must be aware of the following points.
 Manual focus adjustments are not possible.
 During zooming, delayed focus will occur.
 To exit sleep mode, press the shutter button halfway.
3. During initial reset
When the camera is ON or when the camera is turned ON by pressing the shutter button halfway down when the
camera is OFF due to the use of the auto power off function*1, the lens performs an initial reset of the focus lens.
 Although the image in the viewnder will appear out of focus during the initial reset, this does not mean that the
lens has malfunctioned.
 Although the shutter can be released during the initial reset, users must wait approximately 1 second*2 after the
initial reset has completed before shooting.
*1: Applicable to the following EF-S lens compatible EOS cameras:
EOS 7D, EOS 60D, EOS 60Da, EOS 50D, EOS 40D, EOS 30D, EOS 20D, EOS 20Da, EOS REBEL T3i/600D, EOS
REBEL T2i/550D, EOS REBEL T1i/500D, EOS REBEL XSi/450D, EOS REBEL T3/1100D, EOS REBEL XS/1000D, EOS
DIGITAL REBEL XTi/400D DIGITAL, EOS DIGITAL REBEL XT/350D DIGITAL, EOS DIGITAL REBEL/300D DIGITAL
*2: The initial reset time varies depending on camera being used.
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 For detailed information, reference page numbers are provided in parentheses (→ **).
Nomenclature
Contacts (→ 6)
Image stabilizer
switch (→ 8)
Hood mount
(→ 7)
Lens mount index (→ 6)
Filter mounting
thread (→ 10)
Zoom ring (→ 7)
Focusing ring (→ 6)
Zoom position
index (→ 7)
Focus mode switch (→ 6)
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See your camera’s instructions for details on
mounting and detaching the lens.
 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
ngerprints on them, corrosion or faulty
connections can result. The camera and lens
may not operate properly.
 If the contacts get soiled or have ngerprints 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.
Mounting and
Detaching the Lens
1
Setting the Focus
Mode
2
After autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
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.
 Quickly rotating the focusing ring may result in
delayed focus.
 Manual focus adjustments are not possible when
the camera is OFF.
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Hood (sold separately)
4
Zooming
3
To zoom, turn the lens’ zoom ring.
 Be sure to nish zooming before focusing.
Zooming after focusing can affect the focus.
 Blurring may temporarily occur if the zoom ring is
quickly rotated.
 Zooming when the camera is OFF will result in
delayed focus.
 Zooming during still image exposure will result in
delayed focus. This causes any streaks of light
that are captured during exposure to be blurred.
The ET-63 hood cuts out unwanted light and
protects the front of the lens from rain, snow,
and dust.
Turn the hood in the direction of the arrow to
attach it securely.
The hood can be reverse-mounted on the lens
for storage.
 If the hood is not attached properly, vignetting
(darkening of the perimeter of the picture) may
occur.
 When attaching or detaching the hood, grasp
the base of the hood to turn it. To prevent
deformation, do not grasp the rim of the hood
to turn it.
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You can use the image stabilizer in AF or MF
mode.
This function provides optimal image stabilization
depending on shooting conditions (such as
shooting still subjects and following shots).
1 Set the STABILIZER switch to ON.
 If you are not going to use the image stabilizer
function, set the switch to OFF.
2 When you press the shutter button halfway,
the Image Stabilizer will start operating.
 Make sure the image in the viewnder is stable,
then press the shutter button the rest of the way
down to take the picture.
Image Stabilizer
5
 When shooting a still subject, it compensates for
camera shake in all directions.
 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.
 When you use a tripod, the Image Stabilizer
should be turned off to save battery power.
 Even with a monopod, the Image Stabilizer will
be as effective as during hand-held shooting.
However, depending on the shooting environment,
the Image Stabilizer effect may be less effective.
 The image stabilizer function also operates when the
lens is used with an Extension Tube EF12 II or EF25 II.
 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.
 The Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
 The Image Stabilizer may not be fully effective
if you shoot from a violently shaking vehicle or
other transportation.
 The Image Stabilizer consumes more power
than normal shooting, so fewer shots can be
taken if you use the function.
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Image Stabilizer
 In semi-darkened areas such as indoors or
outdoors at night.
 In locations where ash 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.
 When panning subjects in motion.
OFF
ON
OFF
ON
The image stabilizer for this lens is effective for hand-held shots in the following conditions.
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