Canon EF100 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 in

excellent 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 mechanism enables AF photography

while the macro flash is attached.

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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.

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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

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.

•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

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)

Focus mode switch (→4)

Distance scale (→8)

Tr ipod mounting location (→8)

Lens mount index (→4)

Tr ipod mount adapter groove (→8)

Focusing 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

focusing 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 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 as shown

in the diagram, and turn clockwise. To remove it,

reverse the order.

1. Mounting and

Detaching the Lens

After autofocusing in ONE SHOT AF mode, focus

manually by pressing the shutter button halfway

and turning the focusing ring. (Full-time manual

focus)

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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.

Switching the Focusing

Distance Range

4. Hood (Sold Separately)

The ET-67 hood can keep unwanted light out of

the lens, and also protects the front of the lens

from rain, snow, and dust.

Attach and align the hood to the hood mount on

the front of the lens, and turn the hood as shown

by the arrow to secure it.

The hood can be reverse-mounted on the lens

for storage.

•Part 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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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 viewfinder and framing

the subject, focus with the AF or MF mode.

[Magnification Priority]

1. Set the lens' focus mode switch to MF.

2. Set the magnification.

While referring to the magnification scale on

the lens, turn the focusing ring to the desired

magnification.

3. Focus the subject.

While looking through the viewfinder, move the

camera forward or back to find the point of

focus.

4. Touch up the focus.

Turn the focusing ring for fine focusing.

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.

•To prevent camera shake, using a Remote

Switch (both sold separately) and tripod is

recommended.

•To check the depth of field, press the camera's

depth-of-field preview button.

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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 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.

If your eye will not be covering the eyepiece when

the picture is taken (with remote control operation,

etc.), use the eyepiece shutter or eyepiece cover.

This prevents stray light from entering the

eyepiece and throwing off the proper exposure.

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

*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

exposure factor shown in the following table.

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7. Infinity Compensation

Mark

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)

Tr ipod 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 opposite direction will have

the grip bump into the tripod mount.

•Before attaching or detaching the lens, set the

tripod mount back to its normal position

(horizontal shooting position). Otherwise, the

tripod mount may bump into the camera grip or

pentaprism and prevent the lens from being

attached to or detached from the camera.

•If the EOS camera has a built-in flash, the

pentaprism may prevent the tripod mount from

being rotated to the top of the lens.

Infinity compensation mark

Distance 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.

For accurate manual focusing on subjects at

infinity distance, look through the viewfinder while

rotating the focusing ring.

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ENG-9

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

adapter's index with the

lens mount index. Push in

the adapter onto the back of

the lens.

•The 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.

Loosen the tripod mount’s

lock knob. Align the lens

mount index and the tripod

mount’s index, and slip on

the tripod mount.

Rotate the tripod mount to

the desired position and

tighten the lock knob.

•You can loosen the orientation

lock-knob on the tripod mount

to allow it to rotate as needed

to fit a particular camera

model for switching between

vertical and horizontal

positions.

Depending on the EOS camera model, if a battery pack or vertical grip is attached, the tripod mount may

bump into it. If that is the case, remove the battery pack/vertical grip or the tripod mount.

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