Canon RF100mm F2.8 L MACRO IS USM User manual

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Instructions

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Thank you for purchasing a Canon product.
Canon RF100mm F2.8 L MACRO IS USM
is a macro lens for use with EOS R series
cameras.
z“IS” stands for Image Stabilizer.
z“USM” stands for Ultrasonic Motor.
Camera Firmware
Please use the latest version of firmware with the
camera in use. For details on whether the firmware is
the latest version or not, and for details on updating
the firmware, please check the Canon website.
Conventions used in these instructions
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.

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Precautions to ensure that the camera is used
safely. Read these precautions thoroughly. Make
sure all details are observed in order to prevent
risks and injury to the user and other people.
Warning
Details pertaining to risks that may
result in death or serious injury.
zDo not look directly at the sun or other strong
light sources through a lens. This may result in
loss of sight.
zDo not leave a lens in the sun without the lens
cap attached. The lens may concentrate entering
sunlight and cause a malfunction or fire.
Caution
Details pertaining to risks that may result
in injury or damage to other objects.
zDo not leave the product in places exposed to
extremely high or low temperatures. The product
may cause burns or injury when touched.
Safety Precautions

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Handling Precautions
zDo not leave the product in excessive heat such as
in a car in direct sunlight. High temperatures can
cause the product to malfunction.
zIf 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.
zThe lens interior may appear to waver, but this
does not indicate a defect or failure, and will not
cause any problems in use.
zIn order to optimize aperture control, there are
occasions in which the aperture blades will move
during focusing, even when the aperture value is
set for aperture-priority AE or manual exposure,
etc.
zPlease also read any lens related handling
precautions listed in your camera’s instruction
manual.
General Precautions

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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.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician
for help.
CAN ICES-3 (B) / NMB-3 (B)

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Control ring (→ 8)
Hood mount (→ 15)
Filter mounting thread
(→ 18)
SA control ring lock
switch (→ 9)
Focusing ring (→ 7)
Focusing distance range selector switch (→ 7)
Rubber ring (→ 6)
Contacts (→ 6)
Lens mount (→ 6)
Lens mount index (→ 6)
Image stabilizer switch (→ 11)
SA control ring (→ 9)
Tripod mounting location (→ 17)
Focus mode switch (→ 7)
Tripod mount adapter groove (→ 16)
z For detailed information, reference page numbers are provided in parentheses (→ **).
Nomenclature

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1. Attaching and Detaching the Lens
Lens mount index
Lens release button Dust cap
Attaching the Lens
Align the lens mount indexes of the lens and
camera, and turn the lens clockwise until you
hear a click.
Detaching the Lens
Turn the lens counterclockwise while pressing
the camera’s lens release button. Detach the
lens once it has stopped turning.
Please refer to the camera’s instructions for
details.
zSet the camera’s power switch to OFF when
attaching or detaching the lens.
zAttach the lens cap before detaching the lens
from the camera.
zAfter detaching the lens, place the lens with the
rear end up and attach the dust cap to prevent
the lens surface and contacts from getting
scratched. Make sure the lens and dust cap
mount indexes are aligned when attaching the
dust cap.
zContacts that are scratched, soiled, or have
fingerprints on them may result in faulty
connections or corrosion, which may lead to
malfunctions. If the contacts get soiled, clean
them with a soft cloth.
zThe lens mount has a rubber ring to improve
dust-resistance and water-resistance
performance. This rubber ring may cause
friction marks to appear around the camera’s
lens mount, although this will have no effect on
usage.
zRubber rings can be replaced at Canon Service
Center. (chargeable)

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2.
Setting the Focus Mode
Focusing ring
Focus mode switch
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 focusing ring.
zQuickly turning the focusing ring may result in
delayed focus.
zThe lens’ focusing ring is electronic.
z
When AF operation is set to [ONE SHOT],
manual focus is possible after autofocusing has
been completed by continuing to press the shutter
button halfway. (Full-time manual focus) However,
the camera settings need to be changed. Please
refer to the camera’s instructions for details.
3. Setting the Focusing
Distance Range
Focusing distance range selector switch
You can set the focusing distance range with
a switch. Setting the focusing distance range
prevents the lens from focusing on unintentional
subjects at different distances.
Focusing distance range
1. FULL (0.26 m/0.86 ft. - ∞)
2. 0.5 m/1.64 ft. - ∞
3. 0.26 m - 0.5 m/0.86 ft. - 1.64 ft.

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4. Control Ring
The control ring can be assigned the functions
that are commonly used with cameras, such as
shutter speed and aperture settings.
Control ring
The click action of the control ring allows you to
have a sense of how much it is being turned.
Please refer to the camera’s instructions for
details on how to use the control ring.
zThere are cases in which the sound of control
ring operations may be recorded when shooting
movies.
zThe clicking sensation of the control ring can
be removed by the Canon Service Center.
(chargeable)

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The SA control ring can be used to adjust bokeh
style (background blur) and get a soft focus
effect (where the subject is made to look softer).
zSA stands for Spherical Aberration.
5. SA Control Ring
Using the SA Control Ring
SA control ring lock switch
1Slide the SA control ring lock switch in
the direction indicated by the arrow.
SA control ring
2 Turn the SA control ring from the central
position towards either the + or - direction.
zTurning the SA control
ring in the + direction will
soften the bokeh outlines
in front of the focus point,
and strengthen the bokeh
outlines behind the focus
point.
zTurning the SA control
ring in the - direction will
soften the bokeh outlines
behind the focus point,
and strengthen the bokeh
outlines in front of the
focus point.

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zWhen not using the SA control ring, return it to the central position (where it clicks) then slide the SA control
ring lock switch to the LOCK position.
zUsing the SA control ring will change the angle of view and the exposure.
So, after using the SA control ring, you will need to adjust your composition.
zThe SA control ring effect will differ depending on what you are shooting (focusing distance, distances
between subject and background or foreground, etc.). The effect increases as the focusing distance gets
shorter than infinity (∞), and is at its maximum at 0.50 m/1.64 ft. The effect diminishes as you get closer than
0.50 m/1.64 ft., and vanishes at 0.26 m/0.86 ft.
zThe SA control ring effect will change according to aperture setting. The lower the f/number (larger aperture
hole), the greater the effect, reaching its maximum when the lens is wide open. Conversely, the higher the
f/number (smaller aperture hole), the less the effect. For that reason, shooting in aperture-priority AE mode is
recommended.
zQuickly turning the SA control ring may result in delayed focus.
zAutofocus (AF) can be used when the SA control ring is being used, but focus may be hard to achieve with
certain subjects. If that happens, switch to manual focus (MF). Note that you may have to manually adjust
focus by enlarging the image, as the guide frame for the focus guide may not display properly.
zSome subjects may cause focus to be lost when the SA control ring is used. If that happens, refocus the
subject.
zThis lens reaches its maximum resolving power when the SA control ring is in the central position.
SA Control Ring

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This function provides image stabilization
appropriate for shooting conditions (such as
shooting still subjects, panning shots, and
closeup (macro) shooting).
Set the image stabilizer switch to ON when you
want to use the Image Stabilizer.
zSet the image stabilizer switch to OFF when
you are not going to use the Image Stabilizer.
6. Image Stabilizer
zThe shorter the focusing distance is, the less the
image stabilizer effect.
zThe Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
zThe Image Stabilizer may not be fully effective if
you shoot from a violently shaking vehicle or other
transportation.
zWhen using a tripod, it is recommended that you
set the image stabilizer switch to OFF.
zEven with a monopod, the Image Stabilizer will
be as effective as during hand-held shooting.
However, depending on the shooting conditions,
there are cases in which the Image Stabilizer
effect may be less effective.
zWhen shooting a still subject, it compensates for
camera shake in all directions.
zIt compensates for vertical camera shake during
panning shots in a horizontal direction, and
compensates for horizontal camera shake during
panning shots in a vertical direction.

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Image Stabilizer
The Image Stabilizer for this lens is suited to hand-held shots in the following conditions.
zIn semi-darkened areas such as indoors or
outdoors at night.
zIn locations where the flash cannot be used,
such as art museums and theater stages.
zIn situations where your footing is uncertain.
zIn situations where fast shutter speed settings
cannot be used.
zPanning shots of
vehicles, trains, etc.

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This lens allows users to focus from infinity to a
magnification of 1.4x for close-up (macro) shooting.
Hold the camera steadily
Hold the camera steadily as shown in the
illustration on the right when taking hand-held
close-ups (macro), and shoot carefully to minimize
camera shake and prevent focus blurring.
Taking photographs using servo AF
It is recommended that the camera AF operation is
set to [Servo AF] when taking close-up (macro) shots.
Refer to the camera’s instructions for further details.
zIt is necessary to be careful with the following
during close-up (macro) shooting.
• Camera shake creates more impact than on
normal shots, and the effects of the image
stabilizing function are reduced.
• D
epth of field becomes extremely shallow when
taking close-up (macros) shots, and the focus may
blur if the camera is moved forward or backward.
z
T he minimum focusing distance (minimum distance
between the subject and the imaging area) is 0.26 m /
0.86 ft. The working distance (distance between the
front end of the lens and the subject) is 8.6 cm / 0.28 ft.
Use your knee to
support the elbow of the
arm holding the camera
or lens.
Lean against a steady
object like a wall to
support your body and
arm.
Place both elbows on a steady surface such as a table.
7. Hand-held Close-up (Macro) Shooting

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Setting the Exposure
When taking photographs using TTL metering,
no exposure compensation is necessary because
the light coming through the lens is measured.
With TTL metering, photographing with AE (auto
exposure) is possible at all focusing distances.
Just select the desired picture-taking mode, then
check the shutter speed and aperture before
taking a picture.
Magnification and Effective f-number
The aperture displayed on 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 has
almost no influence on the exposure for normal
picture taking. However, for close-up (macro)
shooting, the change in the effective f-number is
more than negligible.
When deciding the exposure using a hand-held
exposure meter, apply the following exposure
factor.
Magnification (x) 0.5 1.0 1.4
Focusing distance (m/ft.) 0.38/
1.25
0.28/
0.92
0.26/
0.86
Effective f/No. 4.5 5.7 6.6
Exposure factor (stops)* +4/3 +2 +7/3
+3/2 +2 +5/2
* Upper values: 1/3 stops. Lower values: 1/2 stops.
zConditions of the subject are very important when
deciding on the correct level of exposure for
close-up (macro) shooting.
It is therefore recommended that you change
the exposure level as much as possible during
shooting, or that you take pictures while checking
the images on the camera’s LCD monitor.
zDuring close-up (macro) shooting, it is
recommended that you use either the aperture-
priority AE (Av) mode or manual exposure (M)
mode, in which adjustment of the depth of field
and exposure is easier.
8. Exposure When Taking Close-up (Macro) Shots

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The custom lens hood reduces unwanted light that causes flare and ghosting and protects the front
of the lens from rain, snow, and dust.
9. Hood
Attachment position mark
Stop position markAttachment position mark
Red dot
Red dot
Red dot
Attaching the Hood
Align the red attachment position mark on the
hood with the red dot on the front of the lens,
and then turn the hood in the direction of the
arrow until you hear a click.
Button
Detaching the Hood
Keep your finger pressed down on the button
located on the side of the hood, and then turn
the hood in the direction of the arrow until the
attachment position mark on the hood is aligned
with the red dot on the front of the lens to detach
it.
The hood can be reverse-mounted on the lens
for storage.
zIf the hood is not attached properly, vignetting (darkening of the perimeter of the picture) may occur.
zGrasp and turn the base of the hood when attaching and detaching it. There are cases in which it may
become deformed if the hood is turned with it grasped near to the rim.

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This lens can be used with the tripod mount ring E (B) with adapter for the RF100mm F2.8 L MACRO
IS USM lens, sold separately. Attach the lens to the tripod mount adapter before attaching the tripod
mount.
10. Tripod Mount (Sold separately)
Attaching the Tripod Mount Adapter
①
③
②
Mounting lugs
Mounting index
While spreading the tripod mount adapter
opening (①), match the mounting index on the
adapter with the SA control ring index on the lens
(②), and slide the adapter along from the lens
mount side (③).
zThe tripod mount adapter’s inner lugs should
slide into the grooves on the lens barrel. The
adapter should not be able to rotate around
the lens barrel.
Removing the Tripod Mount Adapter
①③
② ②
Grip both sides of the tripod mount adapter
opening with the fingers of both hands (①),
spread it open (②) with a slight downward motion
toward the front of the lens, and then slide it
upwards over the lens mount to remove it (③).
z
If a white powder-like substance is apparent on
the surface of the lens after the tripod mount
adapter has been removed, wipe it clean with
a cloth or similar item.
zWhen attaching or removing the the tripod mount adapter, ensure that the lens cap and dust cap are both
on and set the lens so that the lens mount side faces up.

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Attaching the Tripod Mount
Tripod Mount (Sold separately)
①
③
②
Collar
Lock
knob
1Open the collar of the
tripod mount
z
Turn the lock knob
counterclockwise until it becomes
loose (about 3 turns)
(①).
z
Pull the knob in the direction of the
arrow (
② ) to release the collar ( ③ ).
④Tripod mount
adapter
2Attach tripod mount to
lens
zWith the collar open, insert the
tripod mount onto the adapter
and close the collar (④).
⑦
⑦
⑤
⑥
3Fix tripod mount to lens
z
While pulling the lock knob ( ⑤ ),
insert the end of the open collar until
it reaches its original position (
⑥ ).
z
While depressing the lock knob,
turn and tighten it, thus fixing the
mount securely to the lens
(⑦).
When removing the tripod mount, hold the camera and lens and remove the mount following the
above procedure in reverse.
Switching the Orientation of the Image
By loosening the lock knob on the tripod mount you can rotate the camera and the lens to switch the
image in any orientation (vertical, horizontal, etc.). Make sure that the lock knob is tightened after
setting the camera in place.

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11.
Filters (Sold separately)
Tripod Mount (Sold separately)
You can attach filters to the filter mounting thread
on the front of the lens.
zFilters and the Canon macro flash cannot be
used on this lens at the same time.
zIf you need a polarizing filter, use the Canon
Circular Polarizing Filter PL-C B.
zDetach the hood when adjusting the polarizing
filter.
zWhen photographing from a tripod attached
to the tripod mount, using [Elec. 1st-curtain]
or [Electronic] settings is recommended* with
cameras with interchangeable shutter mode
settings.
* When using an EOS R camera, select either
[Mode 1] (default factory setting) or [Mode 2] in
the [Silent LV shoot.] settings, or select [Enable]
in the [Silent shutter] settings.
zWhen carrying the lens with the tripod mount
attached, ensure that the tripod mount lock
knob is securely tightened, and take care when
carrying. Not doing so may result in the product
falling off, leading to damage or injury.

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12.
Macro Flash (Sold separately)
The Macro Ring Lite MR-14EX II or Macro
Twin Lite MT-26EX-RT enables macro flash
photography up to 1.4x magnification in E-TTL II
autoflash mode.
Attach the Macro Lite Adapter 67 (sold
separately) on the filter mounting thread on the
front of the lens for macro flash photography.
zFor information on operating the Canon Macro
Ring Lite MR-14EX II or the Macro Twin Lite
MT-26EX-RT, refer to the individual instruction
booklets.
■ When the MR-14EX II is in use
• Effective Flash Range (Reference)
(With the SA control ring in the central position)
←
Aperture
Magnification (x)
Focusing
distance (m/ft.)
:
Effective flash range
(both sides firing)
32
22
16
11
8
5.6
4
2.8
0.5 1.0 1.4
0.38/
1.25
0.28/
0.92
ISO100 ISO400
0.26/
0.86
0.5 1.0 1.4
0.38/
1.25
0.28/
0.92
0.26
/
0.86
32
22
16
11
8
5.6
4
2.8
zUsing the SA control ring will change the effective
flash range, so please take a test shot beforehand
to check exposure.
■ When the MT-26EX-RT is in use
The MT-26EX-RT’s flash range largely depends
on the flash head’s position.
zIn the event of over-exposure, use a diffuser
adapter, lower the ISO sensitivity setting, or
reduce the aperture size.