Canon EF 17-40mm f/4L USM Bedienungsanleitung

EF17-40mm f/4L USM

Instruction

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Thank you for purchasing a Canon product.

The Canon EF17-40mm f/4L USM is a high-

performance wide-angle zoom lens.

•“USM” stands for Ultrasonic Motor.

Features

1. Two aspherical elements and a Super UD

element result in outstanding image

delineation.

2. Ultrasonic motor (USM) for quick and quiet

autofocusing.

3. Manual focusing is available after the subject

comes into focus in autofocus mode (ONE

SHOT AF).

4. A truly round aperture hole results in a nicer

background blur.

5. Tight seal structure ensures excellent dust-

proof and drip-proof performance.

•Since the front element of this lens moves when

focusing (zooming), you need to attach a Canon

PROTECT filter sold separately for adequate

dust- and water-resistant performance. Without

a filter, the lens is not dust or water-resistant.

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

Distance scale (→6)

Focus mode switch (→5)

Lens mount index (→4)

Contacts (→4)

Hood mount (→7)

Focusing ring (→5)

Gelatin filter holder (→8)

Filter mounting

thread (→7)

Zoom ring (→5)

For 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.

1. Mounting and Detaching the Lens

The lens mount has a rubber ring for enhanced

water- and dust-resistance. The rubber ring may

cause slight abrasions around the camera's lens

mount, but this will not cause any problems. If the

rubber ring becomes worn, it is replaceable by a

Canon Service Center at cost.

•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.

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3. Zooming

To zoom, turn the lens’ zoom ring.

Be sure to finish zooming before focusing.

Changing the zoom ring after focusing can affect

the focus.

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 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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Infinity Compensation Mark

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.

Infinity compensation mark

Distance index

The infrared index corrects the focus setting when using

monochrome infrared film. Focus on the subject

manually, then adjust the distance setting by moving the

focusing ring to the corresponding infrared index mark.

•The infrared index position is based on a

wavelength of 800 nm.

•The compensation amount differs depending on

the focal length. Use the indicated focal length

as a guide when setting the compensation

amount.

•Be sure to observe the manufacturer’s

instructions when using infrared film.

•Use a red filter when you take the picture.

5. Infrared Index

Some EOS cameras cannot use infrared film. See

the instructions for your EOS camera.

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You can attach filters to the filter mounting thread

on the front of the lens.

7. Filters (Sold separately)

•To ensure dust- and water-resistant

performance, attach a Canon PROTECT filter

(77mm).

•Only one filter may be attached.

•If you need a polarizing filter, use the Canon

Circular Polarizing Filter (77mm).

6. Hood

The EW-83E hood can keep unwanted light out

of the lens, and also protects the front of 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 hood's

stop position mark.

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.

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There is a gelatin filter holder at the rear of the

lens. Cut the gelatin filter to fit within the white

frames. Then insert the gelatin filter into the filter

holder.

8. Filter Holder

•Only one filter can be used.

•When you use a gelatin filter, ghosting may

appear in the image.

You can attach Extension Tube EF12 II or EF25

II for magnified shots. The shooting distance and

magnification are shown below.

9. Extension Tubes

(Sold separately)

Camera-to-Subject Magnification

Distance (mm)

Near Far Near Far

EF12 II

17mm 155 159 0.83×0.70×

40mm 206 271 0.59×0.32×

EF25 II

17mm Incompatible

40mm 196 218 1.02×0.70×

Manual focusing is recommended for accurate

focusing.

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10. Close-up Lenses

(Sold separately)

Attaching a 500D (77mm) Close-up Lens

enables close-up photography.

The magnification will be as follows:

•Can be used at the 40mm end (magnification

0.30x - 0.08x)

•Close-up Lens 250D cannot be attached

because there is no size that fits the lens.

•Manual focusing is recommended for accurate

focusing.

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