Canon lens EF 70200mm f4L USM User Manual

EF70-200mm f/4L USM
Instruction
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The Canon EF70-200mm f/4L USM lens is a
compact, high-performance telephoto zoom lens
f
or Canon EOS cameras.
• USM stands for Ultrasonic Motor.
Features
1. With fluorite and UD lens elements, outstanding image delineation is obtained.
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. The lens is compatible with Extender EF1.4X ll and EF2X ll.
Conventions used in this instruction
War...

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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.
• Do not point the lens or camera at the sun or
photograph it. This is because the lens
concentrates the sun’s rays even when the sun is
outside the image area or when shooting with
backlight, which could cause malfunction or fire.
•
Whether it is attached to the camera or...

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Nomenclature
Distance scale (→ 6)
Focus mode switch (→ 4)
Lens mount index (→ 4)Contacts (→ 4)
Focusing distance range 
selection switch (→ 5) Tripod mounting location (→ 8)
Hood mount (→ 7)
Zoom ring (→ 5)
Filter mounting
thread (→ 7)
Focusing ring (→ 4)
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.
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.
2. Setting the Focus Mode
AF
MF
•After detaching the lens, place the lens with the
rear end up to prevent the lens surface and
electrical contacts from getting scratched.
• If the...

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4. Zooming
To   zoom, turn the zoom ring.
Be sure to finish zooming before focusing.
Changing the zoom ring after focusing can affect
the focus.
1.2m3m
You can set the focusing distance range to 
1.2 m/3.9 ft. to infinity or 3 m/9.8 ft. to infinity. By
setting the suitable focusing distance range, the
actual autofocusing time can be shorter.
1.2m3m
3.Switching the Focusing
Distance Range
If the current focusing distance is not within the
f ocusing distance range you switch to, the lens
f ocusing...

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5.Infinity Compensation Mark
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.
103015ft
m
70100
5
F or accurate manual focusing on subjects at
infinity distance, look through the viewfinder while
rotating the focusing ring.
Infinity compensation mark
Distance index
The infrared index corrects...

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7. Hood
The ET-74 hood can keep unwanted light out of
the lens, and also protects the front of the lens
from rain, snow, and dust.
Attach and align the hood to the hood mount on
the front of the lens, and turn the hood as shown
by the arrow to secure it.
The hood can be reverse-mounted on the lens
for st orage.
1.2m3m
•Part of the picture may be blocked if the hood is
not attached properly.
• When attaching or detaching the hood, grasp
the base of the hood to turn it. To prevent
deformation, do not...

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9. Using the Tripod Mount (Sold separately)
Adjusting the Revolving Mount
This lens can be used with the A II (W) tripod mount ring, sold separately.
You can loosen the orientation lock-knob on the tripod mount to allow it to rotate as needed to fit a
particular camera model for switching between vertical and horizontal positions.
Detaching
Use the following procedures to remove and attach the tripod mount.
Turn  the locking knob
counterclockwise until it
becomes loose (about 3
turns), and pull the...

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10. Extenders (Sold Separately)
With Extender EF1.4X ll or EF2X ll attached, the lens specifications wil\
l change as follows:
Item With EF1.4X ll Extender With EF2X ll Extender
Focal length (mm) 98 – 280 140 – 400
Aperturef/5.6 – 45 f/8 – 64
Diagonal25°20’ – 8°50’ 16°20’ – 6°10’
Angle of view Vertical 13°50’ – 4°55’ 9°10’ – 3°30’
Horizontal20°50’ – 7°20’ 13°40’ – 5°10’
Maximum magnification (×) 0.310.45
•Autofocusing is still enabled with Extender EF1.4X II attached.
• When an Extender is...