Canon EF 24-70mm f/4L IS USM User Manual
EF24-70mm f/4L IS USM
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Instructions
Thank you for purchasing a Canon product.
Canon’s EF24-70mm f/4L IS USM is a highperformance standard zoom lens, for use with
EOS cameras. The lens is installed with an Image
Stabilizer, and allows for close-up shooting up to a
magnication of 0.7x when the zoom ring is set to
macro.
“IS” stands for Image Stabilizer.
“USM” stands for Ultrasonic Motor.
Features
1. The Image Stabilizer provides the effect of
having a shutter speed about four stops faster
during normal shooting.*
This function provides optimal image
stabilization depending on shooting conditions
(such as shooting still subjects, following shots,
and close-up shooting).
2. And with the vibration gyro and acceleration
sensor, the image stabilization is highly effective
even for close-up shots. (Equipped with a
Hybrid IS)
3. Use of UD lens elements and two types of
aspherical lens elements giving superior
denition.
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4. Setting the zoom ring to macro allows for macro
shooting up to a magnication of 0.7x.
5. Using a uorine coating on the foremost and
rearmost lens surfaces allows adhered dirt to be
removed more easily than before.
6. Ultrasonic motor (USM) for fast, quiet autofocus.
7. Manual focusing is available after the subject
comes into focus in autofocus mode (ONE
SHOT AF).
8. Circular aperture for producing beautiful
softfocus images.
9. Tight seal structure ensures excellent dustproof
and drip-proof performance.
* Based on [1/focal length] second.
Generally, it requires a shutter speed [1/focal length]
second or faster to prevent camera shake.
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Safety Precautions
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.
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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.
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Safety Precautions
This device complies with Part
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 modications to the equipment
unless otherwise specied in the instructions. If such
changes or modications 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.
15 of the FCC Rules.
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This Class B digital apparatus complies with Canadian ICES-
003.
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Nomenclature
Focus mode switch (→ 6)
Distance scale (→ 12)
Hood mount (→ 17)
Filter Mounting Thread
(→ 18)
Zoom ring (→ 6)
Rubber ring
(→ 5)
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Contacts (→ 5)
Focusing ring (→ 6)
Image stabilizer switch (→ 13)
For detailed information, reference page numbers are provided in parentheses (→ **).
Lens mount index (→ 5)
Zoom ring lock lever
(also serves as a
macro switch)
(→ 7, 8)
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1. Mounting and Detaching the Lens
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.
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The lens mount has a rubber ring for enhanced
dust- and water-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.
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2.
Setting the Focus Mode
3.
Zooming
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.
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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To zoom, rotate the zoom ring.
Be sure to nish zooming before focusing. Zooming
after focusing can affect the focus.
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