Canon lens EF 100mm f28L Macro IS USM User Manual

							EF100mm f/2.8L MACRO IS USM
Instruction
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							The Canon EF100mm f/2.8L MACRO IS USM
lens is a macro lens dedicated to Canon EOS
cameras. It is equipped with an Image
Stabilizer and can shoot close-ups up to 1:1
as well as normal shots.
• IS stands for Image Stabilizer.
• USM stands for Ultrasonic Motor.ENG-1
Thank you for purchasing a Canon product.
Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
Features
1. The Image Stabilizer provides the effect of having a shutter speed about four stops faster
during normal shooting.*
This function provides optimal image
stabilization depending on shooting conditions
(such as shooting still subjects and following
shots).
2. And with the vibration gyro and acceleration sensor, the image stabilization is highly
effective even for close-up shots.
3. UD lens elements for excellent imaging performance. 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. A truly round aperture hole results in a nicer background blur.
7. A Canon macro flash makes it easy to take close-up pictures with a flash. The inner
focusing mechanism enables AF photography
while the macro flash is attached.
8. Tight seal structure ensures excellent dust- proof and drip-proof performance.
*Based on [1/focal length] second.
To   prevent blur caused by camera shake during normal
shooting, the shutter speed should be the reciprocal of
the current focal length (1/focal length) or faster.
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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 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
wa rm  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.
• Do not leave the lens in excessive heat such as in
a car in direct sunlight. High temperatures can
cause the lens to malfunction.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Do not make any changes or modifications to the equipment
unless otherwise specified in the instructions. If such changes or
modifications should be made, you could be required to stop
operation of the equipment.
This equipment has been tested and found to comply with the
limits for a class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications.
However, there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult the dealer or an experienced radio/TV technician for
help.
This Class B digital apparatus complies with Canadian ICES-003.
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Nomenclature
Hood mount (→ 7)
Filter mounting
thread (→ 14, 15) Focusing ring (→ 5) Focusing distance range selection switch (→ 5)
Image stabilizer switch (→ 10) Focus mode switch (→ 5) Distance scale (→ 6)
Contacts (→ 4)
Lens mount index (→ 4)
Tripod mounting location (→ 13) Rubber ring (→ 4)
F
or 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 with the dust
cap. To attach it properly, align the lens mount
index and the 
Kindex of the dust cap as shown
in the diagram, and turn clockwise. To remove it,
reverse the order.
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.
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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 autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
Y ou can switch the focusing distance range to
one of three settings: FULL (0.3 m/1.0 ft. to
infinity), 0.3 m/1.0 ft. to 0.5 m/1.6 ft., or 0.5 m/1.6
ft. to infinity.
By setting the suitable focusing distance range,
the actual autofocusing time can be shorter.
3.Switching the Focusing
Distance Range
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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 of subjects at
infinity, look through the viewfinder or look at the
magnified image* on the LCD screen while
rotating the focusing ring.
* For cameras with Live View shooting capability.
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5. Hood
The ET-73 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 hood, grasp the base of the hood to turn it. To prevent deformation, do not
grasp the rim of the hood to turn it.
• Remove the hood when using the macro flash.
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6. Picture Taking
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
30 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 14 cm.
Fo r normal close-up shooting, the higher the
magnification, the faster the shutter speed must
be to prevent blur caused by camera shake.
Although it depends on the shooting conditions,
usually the shutter speed must be at least one or
two stops faster than normal.
F or a shooting magnification of 0.5x, this lens
provides the effect of a shutter speed faster by
about three stops. For 1x, it will be about two
stops faster.*
* Depending on shooting conditions.
Since macro shots have a very shallow depth of
field, focus carefully to obtain proper sharpness.
• The magnification refers to the ratio between the
subject’s size and the corresponding image size
on the focal plane. On the distance index, it is
indicated as 1:x.
•T o check the depth of field, press the cameras
depth-of-field preview button.
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7. 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 f-number) becomes darker
(effective f-number increases) at closer focusing
distances (magnification increases). This does
not cause exposure problems for normal picture-
taking. However, for closeup photography, you
cannot ignore the change in the effective f-
number.
• The correct exposure for a close-up shot largely
depends on the subject. Therefore, try to bracket
the exposure for the same subject.
• Using aperture-priority AE (Av ) or Manual (M)
picture-taking modes are recommended for
macro photography as it is easy to adjust depth
of field and exposure in these modes.
Magnification 1 : 5 1 : 3 1 : 2 1 : 1.5 1 : 1
Effective f/No. 3.6 4.1 4.6 5.0 5.9
Exposure Factor  + +1 +1 +1 +2
(stops)* + +1 +1 +2
1
21
2
2
31
32
3
*Upper values: 1/3 stops. Lower values: 1/2 stops.
When you use a handheld exposure meter to set
the exposure, you must take into account the
e xposure factor shown in the following table.
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