Canon lens EF 100mm f28 Macro USM User Manual

EF100mm f/2.8 MACRO USM
Instruction
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The Canon EF100mm f/2.8 MACRO USM is a
macro lens that can be used for normal
photography as well as macro photography
up to 1x magnification. It is dedicated to
Canon EOS cameras.
• USM stands for Ultrasonic Motor.Features
1. The three-group floating system results inexcellent delineation at all focusing distances
from life-size to infinity.
2. Ultrasonic motor (USM) for quick and quiet autofocusing.
3. A Canon macro flash makes it easy to take close-up pictures with a flash. The inner
focusing...

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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
For detailed information, reference page numbers are provided in parentheses (→ **).
Hood and Macro Ring Lite mount (
→5, 11)
Filter mounting thread
(→ 10)
Focusing ring ( →4) F
ocus mode switch ( →4)
Distance scale ( →8)
Tr ipod mounting location ( →8)
Lens mount index ( →4)
Tr ipod mount adapter groove ( →8)
F ocusing distance range selection switch (→ 5)
Contacts (
→4)
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See your camera’s instructions for details 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
•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...

You can set the focusing distance range to 
0.31 m/1.0 ft. to infinity or 0.48 m/1.6 ft. to infinity.
By setting the suitable focusing distance range,
the actual autofocusing time can be shorter.
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If you autofocus outside the set focusing distance
range, the lens may stop focusing at the start of
the focusing range; however, this is not a
malfunction. Press the shutter release button
halfway again.
3.Switching the Focusing
Distance Range4. Hood (Sold Separately)
The ET-67 hood can keep unwanted...

5. Picture Taking
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Normal Photography
The lens can be used as a medium-telephoto
lens for normal photography such as portraits.
Closeup Photography
Close-up photos up to 1x (life-size) magnification
are possible. The minimum focusing distance of
31 cm is the distance from the subject to the
focal plane. The working distance from the front
of the lens to the subject is about 15 cm.
When focusing, you can give priority to framing
or to magnification.
[Framing Priority]
While looking through the...

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6. About Exposure
Setting the Exposure
When taking photographs using TTL metering,
no exposure compensation is necessary to meter
the light coming through the lens.
With TTL metering, AE (autoexposure) is
possible at all focusing distances. Just set the
desired picture-taking mode, then check the
shutter speed and aperture before taking the
picture.
Magnification and Effective f-
number
The aperture displayed by the camera assumes
that the focus is set to infinity. The actual
aperture (effective...

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7. Infinity CompensationMark
To   mount the lens on a tripod, Tripod mount ring B
(B) and the tripod mount adapter (sold separately) for
the EF100mm f/2.8 Macro USM will be necessary.
Attachment 
index
Tripod mount
base
Locking 
tab
Mounting index
Tripod mount 
attachment lugs
Mounting lugs
8. Using the Tripod Mount 
(Sold separately)
Tripod mount adapter Tripod mount ring B (B)
•When switching to vertical shooting, rotate the
camera so that the grip is at the top. Rotating
the camera in the...

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Using the Tripod Mount (Sold separately)
Attaching and Detaching the Tripod Mount
To  attach the tripod mount, follow the illustrated procedure below. To remove the tripod mount, follow
the procedure in reverse.
Align the tripod mount
adapters index  with the
lens mount index. Push in
the adapter onto the back of
the lens.
•The tripod mount adapters
inner lugs should slide into the
grooves on the lens barrel.
The adapter should not be
able to rotate around the lens
barrel.
Loosen the tripod...