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
magnification of 0.7x when the zoom ring is set to
macro.
●● “IS” stands for Image Stabilizer.
●● “USM” stands for Ultrasonic Motor.
Features
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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
definition.
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4. Setting the zoom ring to macro allows for macro
shooting up to a magnification of 0.7x.
5. Using a fluorine 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
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, 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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●● 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.
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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 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 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.
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This Class B digital apparatus complies with Canadian ICES003.
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Nomenclature
Focus mode switch (→ 6)
Distance scale (→ 12)
Hood mount (→ 17)
Zoom ring (→ 6)
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Rubber ring
(→ 5)
Filter Mounting Thread
(→ 18)
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Zoom ring lock lever
(also serves as a
macro switch)
(→ 7, 8)
Contacts (→ 5)
Focusing ring (→ 6)
Image stabilizer switch (→ 13)
Lens mount index (→ 5)
●● 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
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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●● 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.
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2. Setting the Focus Mode
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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.
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After autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
3. Zooming
To zoom, rotate the zoom ring.
Be sure to finish zooming before focusing. Zooming
after focusing can affect the focus.
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4. Fixing the Zoom Ring
The zoom ring can be fixed to keep the lens at the shortest point. This function is convenient for
carrying a camera on a strap because it prevents the lens from extending.
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1 Rotate the zoom ring to the
widest position (24 mm).
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2Slide the zoom ring lock
lever in the direction
indicated by the arrow.
●● To release the zoom ring,
slide the zoom ring lock lever
in the direction opposite to
the arrow.
The zoom ring can only be locked at maximum wide angle.
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5. Setting for Close-up Shooting
Setting the zoom ring to macro allows for close-up shooting.
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1 Slide the macro switch (zoom 2Rotate the zoom ring past the 3 Release the macro switch.
ring lock lever) to MACRO.
Keep your finger on the lever
so that it does not slide back
to its normal position.
telephoto end (70 mm) into
the macro range indicated by
the yellow line.
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●● After the zoom ring has been set to macro, the zoom ring can only be operated within the macro
range (indicated by the yellow line).
●● To set the zoom ring back to the normal zoom range, slide the macro switch (zoom ring lock lever)
to MACRO (just as in step 1). While keeping your finger on the lever, rotate the zoom ring toward
the wide end. Release the lever once the zoom ring is set to the normal zoom range.
●● Magnification refers to the comparison of the size of a subject to the size of its image in the imaging area.
●● Setting the zoom ring to the macro range allows for close-up shooting (minimum focusing distance of 20 cm) up to a
maximum magnification of 0.7x. The focusing distance refers to the distance between the subject and imaging area.
In addition, the distance between the end of the lens and the subject (working distance) is approximately 3 cm.
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6. Close-up Shooting
The yellow line on the distance scale indicates the range in which image degradation is minimal during
close-up shooting.* The following procedure shows how to focus within the range indicated by the
yellow line in order to capture photos with high definition.
* However, maximum magnification is 0.5x when shooting within the range indicated by the yellow line on the distance scale.
We recommend using a tripod for close-up (macro) shooting.
1 After setting the zoom
ring to macro, position the
focusing ring so that the
indicator appears in the
center of the yellow line on
the distance scale.
●● Maximum magnification is
0.5x when shooting within the
range indicated by the yellow
line on the distance scale.
When shooting at a higher
magnification, please move
out of the range indicated by
the yellow line to focus.
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2Adjust the zoom ring and
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position the camera by
moving it forward or back.
Set the magnification
and obtain a rough focus
by using the zoom ring
to adjust the focusing
distance.
●● A rough focus is obtained so
that the user can focus when
shooting within the range
indicated by the yellow line on
the distance scale.
3 Press the shutter button
halfway and focus using AF
or MF before shooting.
●● In order to achieve a sharp focus
in manual focus (MF) mode,
please use the magnified view
feature* which is found in cameras
that offer Live View shooting.
* For information about this
feature, see the camera’s
instruction manual.
In addition, please also
read the Live View shooting
cautions section found in the
camera’s instruction manual.
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Close-up Shooting
●● Please focus carefully since the depth of field
with close-ups is shallow.
●● The focusing ring distance scale is designed to
display distances during normal shooting. As a
result, it does not display distances during closeup shooting.
●● When the zoom ring is set to the macro range,
there are cameras that will record the focal
length information into the image at a value
between the range from above 70 mm to 80 mm
due to system issues.* However, the actually
focal length will never exceed 70 mm.
* Depending on cameras.
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●● The magnification of this lens is determined by
the combination of the following three factors:
the focusing ring position, zoom ring position,
and focusing distance. Therefore, the number
of combinations for achieving a certain level
of magnification is countless. The method for
close-up shooting described here involves trying
as much as possible to keep the focus position
within the range indicated by the yellow line on
the distance scale. However, please keep in
mind that this is just one method of many.
●● To check depth of field, please use the camera’s
depth of field function.
●● For information on taking hand-held close-ups,
please refer to page 15.
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7. Exposure during Close-up Shooting
Setting the Exposure
When taking photographs using TTL metering,
no exposure compensation is necessary to
meter the light coming through the lens.
With TTL metering, AE (autoexposure) is
possible at all focusing distances. Just set the
desired picture-taking mode, then check the
shutter speed and aperture before taking the
picture.
Magnification and Effective
f-number
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When you use a handheld exposure meter to
set the exposure, you must take into account the
exposure factor shown in the following table.
Magnification
Effective f/No.
Exposure Factor
(stops)*
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The aperture displayed by the camera assumes
that the focus is set to infinity. The actual
aperture (effective f-number) becomes darker
(effective f-number increases) at closer focusing
distances (magnification increases). This does
not cause exposure problems for normal picturetaking. However, for closeup photography,
you cannot ignore the change in the effective
f-number.
1:5
4.71
+1/3
+1/2
1:3
5.06
+2/3
+1/2
1:2
5.66
+1
+1
1 : 1.5
5.66
+1
+1
* Upper values: 1/3 stops. Lower values: 1/2 stops.
●● The correct exposure for a close-up shot largely
depends on the subject. Therefore, try to bracket
the exposure for the same subject.
●● Using aperture-priority AE (Av) or Manual (M)
picture-taking modes are recommended for
macro photography as it is easy to adjust depth
of field and exposure in these modes.
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8. Infinity Compensation
Mark
9. Infrared Index
Infinity compensation mark
Distance index
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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 distance
scale L mark is aligned with the distance index.
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For accurate manual focusing of subjects at infinity,
look through the viewfinder or look at the magnified
image* on the LCD screen while rotating the
focusing ring.
* For cameras with Live View shooting capability.
The infrared index corrects the focus setting
when using monochrome infrared film. Focus on
the subject manually, then adjust the distance
setting by moving the focusing ring to the
corresponding infrared index mark.
Some EOS cameras cannot use infrared film. See
the instructions for your EOS camera.
●● The infrared index position is based on a
wavelength of 800 nm.
●● The compensation amount differs depending on
the focal length. Use the indicated focal length
as a guide when setting the compensation
amount.
●● Be sure to observe the manufacturer’s
instructions when using infrared film.
●● Use a red filter when you take the picture.
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10. Image Stabilizer
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, following
shots, and close-up shooting).
ON
1 Set the STABILIZER
switch to ON.
●● The Hybrid IS is activated
during close-up shooting (see
page 8) which provides highly
effective image stabilization.
●● If you are not going to use the
image stabilizer function, set
the switch to OFF.
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2When 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.
OFF
The image stabilizer in this lens is
effective for hand-held shots under the
following conditions.
●● Close-up shooting.
●● 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.
●● When panning subjects in motion.
●● In situations where fast shutter
settings cannot be used.
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Image Stabilizer
●● The shorter the subject distance from the
camera, the lesser the Image Stabilizer effect
will be.
●● The Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
●● 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 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.
●● 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 IIE/50/50E, REBEL 2000/300, IX, and
D30, the Image Stabilizer will not work during
self-timer operation.
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●● 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.
●● The stabilizer is equally effective for handheld photography and photography with a
monopod. The Image Stabilizer effect may be
reduced, however, depending on the shooting
environment.
●● The image stabilizer function also operates when
the lens is used with an Extension Tube EF12 ll
or EF25 ll.
●● Pictures may look distorted after being taken
depending on the camera, but this doesn’t 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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11. Image Stabilization during Close-up Shooting
For normal close-up shooting, the higher the
magnification, the faster the shutter speed must
be to prevent blur caused by camera shake.
Although it depends on the shooting conditions,
usually the shutter speed must be at least one
or two stops faster than normal.
The magnification refers to the ratio between the
subject’s size and the corresponding image size on
the focal plane.
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The EF24-70mm f/4L IS USM is installed with
an Image Stabilizer that gives the equivalent
effect of a shutter speed approximately 3 steps
faster when shooting at a magnification of
0.5x, and approximately 2.5 steps faster when
shooting at 0.7x.*
* Depending on shooting conditions.
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12. Taking Hand-held Close-ups
Close-up shots are more prone to be affected by
camera shake than with normal shooting. The
Image Stabilizer’s corrective effect is therefore
less during close-ups than during normal
shooting even with the same degree of camera
shake.
The depth of field also becomes very shallow
with close-ups, and moving forward or back
even slightly will throw off the focus.
When hand-holding the camera for close-up
shooting, minimize camera shake and blurred
focus with the following techniques:
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Place both elbows on a steady surface such as a table.
Hold the camera firmly
As shown on the right, hold the camera firmly so
it does not move while shooting.
Use AI Servo AF
For close-up shots, set the camera’s AF mode to
AI Servo AF. Using autofocus is recommended.
The AI Servo AF mode can minimize blurred
focus during close-up shooting.
For details, see the camera’s instruction manual.
Use your knee to support
an arm holding the
camera.
Lean against a steady
object like a wall.
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13. Hood
The EW-83L hood cuts out unwanted light and protects the front of the lens from rain, snow, and
dust.
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●Attaching
To attach the hood, align the hood’s attachment
position mark with the red dot on the front of the
lens, then turn the hood as shown by the arrow
until the lens’ red dot is aligned with the hood’s
stop position mark.
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Button
●Removing
To remove the hood, hold down the button on
the side and turn the hood in the direction of the
arrow until the position mark on the hood aligns
with the red dot. The hood can be reversemounted 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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14. F
ilters
(Sold separately)
16. E
xtension Tubes
(Sold separately)
You can attach filters to the filter mounting
thread on the front of the lens.
●● If you need a polarizing filter, use the Canon
Circular Polarizing Filter PL-C B (77 mm).
●● To adjust the polarizing filter, first remove the
lens hood.
15. C
lose-up Lenses
(Sold separately)
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Attaching a 500D (77mm) Close-up Lens
enables close-up photography.
Magnification will be 0.05x – 0.29x.
Magnification will be 0.16x – 0.74x within the
macro range.
You can attach extension tube EF12 II or EF25
II for magnified shots. The shooting distance
and magnification are shown below.
Focusing Distance Range (mm)
Magnification (×)
Close distance Long distance Close distance Long distance
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EF12 II
EF25 II
24mm
70mm
163
258
174
523
226
332
24mm
70mm
0.63
0.44
0.50
0.18
Incompatible
0.72
0.4
An extension tube cannot be used when the zoom
ring is set to macro.
MF mode is recommended for accurate focusing.
●● Close-up Lens 250D cannot be attached
because there is no size that fits the lens.
●● MF mode is recommended for accurate focusing.
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Specifications
Focal Length/Aperture
24-70mm f/4
Lens Construction
12 groups, 15 elements
Minimum Aperture
f/22
Angle of View
Diagonal: 84° – 34°, Vertical: 53° – 19° 30′, Horizontal: 74° – 29°
Min. Focusing Distance
0.38 m/1.25 ft. (0.2 m/0.66 ft. in the macro range; working distance of approx. 3 cm/1.18 in.)
Max. Magnification
0.21x (at 70mm); 0.7x in the macro range
Field of View
Approx. 287 x 439 – 115 x 172.5 mm/
11.30 x 17.28 – 4.53 x 6.79 inch (at 0.38 m/1.25 ft.)
Filter Diameter
77 mm/3.03 inch
Max. Diameter and Length
83.4 x 93 mm/3.28 x 3.66 inch
Weight
Approx. 600 g/21.2 oz
Hood
EW-83L
Lens Cap
E-77 II
Case
LP1219
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●● The lens length is measured from the mount surface to the front end of the lens. Add 24.2 mm
when including the lens cap and dust cap.
●● The size and weight listed are for the lens only, except as indicated.
●● Extenders cannot be used with this lens.
●● 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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CT1-8585-001
1012Ni
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© CANON INC. 2012