Canon lens EF 2470mm f4L IS USM User Manual

							Instructions
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EF24-70mm f/4L IS USM
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Thank you for purchasing a Canon product.
Canon’s EF24-70mm f/4L IS USM is a high-
performance 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
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. 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
●●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.
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, 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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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.
 Safety Precautions
This Class B digital apparatus complies with Canadian ICES-
003.
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Nomenclature
●● For detailed information, reference page numbers are provided in parentheses (→  **).
Focus mode switch (→ 6)
Distance scale ( → 12)
Zoom ring (→ 6)
Rubber ring
(→ 5)
Hood mount (
→ 17)
Filter Mounting Thread
(→ 18) Focusing ring ( → 6)
Image stabilizer switch ( → 13) Lens mount index (
→ 5)
Contacts (→ 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.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.
●●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 Mode3.  Zooming
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 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.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. 
2 Slide 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.
1 Rotate the zoom ring to the 
widest 
position (24 mm).
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.●●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.
2 Rotate the zoom ring past the 
telephoto end (70 mm) into 
the macro range indicated by 
the yellow line.3 Release the macro switch.1 Slide the macro switch (zoom 
ring lock lever) to MACRO. 
Keep your finger on the lever 
so that it does not slide back 
to its normal position.
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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.
2 Adjust the zoom ring and 
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.
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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