Nomenclature
●①
●②
●③
●④
●⑤
●⑥
●⑦
●⑧
●⑨
●⑩
Hood mount
Zoom ring
Focusing ring
Zoom position index
Distance scale
Focus mode switch
Lens mount index
Contacts
EF Zoom Lenses
EF17-35mm f/2.8L USM
EF28-70mm f/2.8L USM
EF70-200mm f/2.8L USM
Instructions
Distance index
Infrared index
Thank you for purchasing a Canon product.
Safety Precautions
1. 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.
2. 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.
2. Setting the Focus Mode
To shoot in autofocus (AF) mode, set the focus mode switch to AF ❹ .
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.
●❶
●❷
●❸
●❹
●❺
●❻
• 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, turn the lens’ zoom ring ❺ .
• Be sure to finish zooming before focusing. Chae zoom
ring after focusing can affect the focus.
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.
4. Infrared Index
The infrared index corrects the focus when
monochrome infrared film.
Focus on the subject in MF, then ance ing by
moving the focusing ring to the cofrarendex mark
❻ .
• The infrared index osition is basength of 800 nm.
• Be sure to observe manufactureions when using
infrared film.
1. Mounting and Detaching the Lens
See your camera’s instructions for details on mounting and
detaching the lens.
• Use a red filter also hen you e the picture.
• 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, and turn clockwise. To remove it, reverse the order.
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