Canon lens EF 2470mm f28L USM User Manual

EF24-70mm f/2.8L USM
Instruction
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Thank you for purchasing a Canon product.
The Canon EF24-70mm f/2.8L USM lens is a
high-performance, standard zoom lens for
Canon EOS cameras.
• USM stands for Ultrasonic Motor.Features
1. Two aspherical elements and a UD elementresult in outstanding image delineation.
2. Ultrasonic motor (USM) for quick and quiet autofocusing.
3. Manual focusing is available after the subject comes into focus in autofocus mode (ONE
SHOT AF).
4. A truly round aperture hole results in a nicer background blur.
5....

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aSafety Precautions
aSafety 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.
Handling Cautions• If the lens is taken from a cold environment into
a...

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Nomenclature
Distance scale (→ 6)
Focus mode switch (→ 5)
Lens mount index (→ 4)Contacts (→ 4)
Hood mount (→ 7)
Zoom ring (→ 5)
Filter mounting
thread (→ 7) Focusing ring (→ 5)
For detailed information, reference page numbers are provided in parentheses ( →**).
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See your camera’s instructions for
instructions on mounting and detaching the
lens.
1. Mounting and Detaching the Lens
The lens mount has a rubber ring for enhanced
w
ater- and dust-resistance. The rubber ring may
cause slight abrasions around the cameras lens
mount, but this will not cause any problems. If the
rub ber 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
electrical...

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3. Zooming
To   zoom, turn the zoom ring.
Be sure to finish zooming before focusing.
Changing the zoom ring after focusing can affect
the focus.
2. Setting the Focus
Mode
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
f ocusing 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...

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4.Infinity Compensation Mark
Infinity compensation markDistance index
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 L mark is
aligned with the distance indicator on the
distance scale.
F or accurate manual focusing on subjects at
infinity distance, look through the viewfinder while
rotating the focusing ring.
5. Infrared Index
The infrared index corrects...

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Y
ou can attach filters to the filter mounting thread
on the front of the lens.
6. Hood
• Only one filter may be attached.
• If you need a polarizing filter, use the Canon
Circular Polarizing Filter (77mm).
•T o adjust the polarizing filter, first remove the
lens hood.
The EW-83F hood can keep unwanted light out
of the lens, and also protects the front of the lens
from rain, snow, and dust.
To   attach the hood, align the hood’s attachment
position mark with the red dot on the front of the
lens,...

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You can attach Extension Tube EF12 II or EF25
II for magnified shots. The shooting distance and
magnification are shown below.
8. Extension Tubes 
(Sold separately)
Camera-to-Subject  Magnification
Distance (mm)
Near Far Near Far
EF12 II24mm 222 234 0.63 ×0.50×
70mm 305 560 0.49 ×0.18×
EF25 II24mm Incompatible
70mm 279 366 0.75 ×0.40×
Manual focusing is recommended for accurate
focusing.
9. Close-up Lenses 
(Sold separately)
Attaching a 500D (77mm) Close-up Lens
enables close-up photography.
The...

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10. Specifications
Focal Length/Aperture24 – 70 mm f/2.8
Lens Construction13 groups, 16 elements
Minimum Aperturef/22
Angle of ViewDiagonal: 84° – 34° Vertical: 53° – 19° 30’ Horizontal: 74° – 29°
Min. Focusing Distance0.38 m/1.25 ft.
Max. Magnification and  0.29× (at 70 mm),
Field of Viewapprox. 212 ×322 mm – 83  ×122 mm / 8.3  ×12.6 inch – 3.3  ×4.8 inch (at 0.38 m )
Filter Diameter 77 mm
Max. Diameter and Length83.2 ×123.5 mm / 3.3  ×4.8 inch
W eight 950 g / 33.3 oz
Hood EW-83F
Lens CapE-77U...