Canon lens EF 70300mm f456L IS USM User Manual

EF70-300mm f/4-5.6L IS USM
Instruction
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Dedicated to EOS cameras, the Canon EF70-
300mm f/4-5.6L IS USM lens is a high-
performance telephoto zoom lens equipped
with an Image Stabilizer.
•
“IS” stands for Image Stabilizer.
• “USM” stands for Ultrasonic Motor.
4. Ultrasonic motor (USM) for quick and quiet
autofocusing.
5. Manual focusing is available after the subject comes into focus in autofocus mode (ONE
SHOT AF).
6. The zoom ring can be fixed to keep the lens at the shortest point.
7. A truly round aperture hole results in a nicer...

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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
Hood mount (→ 6)Filter mounting
thread (→ 13) Image stabilizer switch (→ 8)
Image stabilizer mode selector switch (→ 8) Focus mode switch (→ 5)
Zoom ring (→ 5)
Focusing ring (→ 5)
Distance scale (→ 11)
Contacts (→ 4)
Lens mount index (→ 4) Rubber ring (→ 4)Tripod mounting location (
→ 12)
Zoom ring lock 
lever (→ 7)
For detailed information, reference page numbers are provided in parentheses ( →**).
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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
electrical 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...

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3. Zooming
To   zoom, turn the zoom ring.
Be sure to finish zooming before focusing.
Zooming after focusing can affect the focus.
Especially for shooting distances shorter than 3 m
/ 9.8 ft., zooming to another focal length will
greatly change 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...

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4. Hood
The ET-73B hood can keep unwanted light out of the lens, and also protects 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, then turn the hood as shown by the arrow until the lens red dot is aligned with the hoods stop
position mark.
The hood can be reverse-mounted on the lens for storage.
•P art of the picture may be blocked if the hood is not attached properly.
• When attaching or detaching the...

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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.
5. Fixing the Zoom Ring
Slide the zoom ring lock
lever in the direction
indicated by the arrow.
•T
o release the zoom ring, slide
the zoom ring lock lever in the
direction opposite to the arrow.
Tu rn  the zoom ring to the
widest position (70mm).
The zoom ring can only be locked at maximum wide angle.
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Y
ou can use the image stabilizer in AF or MF mode.
6. Image Stabilizer Settings
Select the stabilizer mode.
• MODE 1: Corrects vibrations
in all directions. It is mainly
effective for shooting still
subjects.
• MODE 2: It compensates for
ver tical camera shake during
f ollowing shots in a horizontal
direction, and compensates for
horizontal camera shake
during following shots in a
ver tical direction.
When you press the shutter
button halfway, the Image
Stabilizer will start
operating.
• Make sure...

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7. Tips on Using the Image Stabilizer
•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.
•I n situations where fast shutter settings cannot
be used. •
When panning subjects in motion.
● MODE 1 ●MODE 2
The image stabilizer in this lens is effective for hand-held shots under the following conditions.
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