Canon EF17-40LU Manuale utente

Thank you for purchasing aCanon USM'lens.

The

Canon

EF17

~40mm

f/4L USM is ahigh-

performance wide-angle zoom lens.

"USM" stands for Ultrasonic Motor.

Features

Two aspherical elements and aSuper UD

element result in sharp pictures and

outstanding image delineation.

Ultrasonic Motor (USM) for silent and high-

speed

operation.

3. Manual focusing enabled even in the

mode.

Circular diaphragm for better background blur.

Sealed construction for higher dust- and water-

resistance compared to previous lenses. (For

maximum protection, afilter must also be

attached to the front

the lens.)

Handling Cautions

the lens

taken from acold environment into a

warm

one,

condensation

may

develop

the lens

surface

and

internal parts.

prevent condensation

this case, lirst put the lens into

airtight plastic

bag

before taking it from acold to warm environment.

Then take out the lens after it has warmed gradually.

the same when taking the.Iens from awarm

environment into acold one.

Although the lens

dust- and water-resistant, afilter

must also

attached

the front of the lens for

complete protection. (The front of the lens moves

during zooming.)

Conventions used in this instruction

.-.

Warning to prevent lens or camera malfunction

or damage.

Supplementary notes on using the lens and

LjJ taking pictures.

1i1-1

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and

receiver.

•Consult the dealer or an experienced radiofTV

technician for help.

This digital apparatus does not exceed the Class B

limits for radio noise emissions from digital apparatus as

set out

the interference-causing equipment standard

entitled "Digital Apparatus", ICES-003 of the Industry

Canada.

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

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 aclass Bdigital device, pursuant to

part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful

interference

aresidential installation. This equipment

generates, uses and can radiate radio frequency energy

and, if not installed and used

accordance with the

instructions, may cause harmful interference to radio

communications.

However, there is no guarantee that interference will not

occur

aparticular 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:

m-2

(E:

The (E: Mark is aDirective conformity mark

of the European Community (EC)

Focus mode switch

(---7

Hood

mount

(---7

1---------

Filter mounting

thread (---78)

Focusing ring

(---7

Distance scale

(---7

6,7)

Zoom

ring

(---7

Gelatin filter holder

(---7

Contacts

(---7

Lens mounting index (---74)

C')

Numbers in parentheses indicate reference page numbers.

1E1-3

See your camera's instructions for instructions

mounting and detaching the lens.

•After detaching the lens, attach the dust cap to

the rear of the lens to prevent the contacts and

lens from getting scratched.

•If the contacts are dirty, scratched, or soiled with

fingerprints, etc., corrosion

ora

faulty

connection or operation may result.

•Always attach the

dust

cap to the lens when the

lens is not mounted on the camera.

attach

the dust cap, align the mark on the dust cap

with the mark on the lens and turn the dust cap

clockwise.

remove the dust cap, turn it

counter-clockwise.

11-4

oThe lens mount has arubber 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

cost.

shoot

autofocus mode, set the focus mode

switch to AF.

use only manual focusing, set the focus mode

switch to MF , and focus by turning the focusing

ring.

The manual focus ring always works, regardless

of the focus mode.

•After autofocusing

ONE SHOT AF mode, focus

manually by pressing the shutter button halfway and

turning the focusing ring.

61-5

zoom, turn the zoom ring.

•Be sure to finish zooming before focusing.

Changing the zoom ring after focusing can affect

the focus.

•This lens can partially obstruct the light from the

built-in flash units.

avoid this, use

external

flash.

11-6

compensate for shifting of the infinity focus

point that results from changes

temperature,

you can rotate the distance scale slightly past

the normal infinity focus mark.

•The infinity position at normal temperature

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

subjects at infinity

distance, look through the viewfinder while rotating the

focusing ring.

The

infrared

index

corrects

the

focus

setting

when

using

monochrome

infrared

film.

Focus

the

subject

manually,

then

adjust

the

distance

setting

moving

the

focusing

ring

the

corresponding

infrared

index

mark.

•

The

compensation

amount

differs

depending

the

focal

length.

Use

the

indicated

focal

length

guide

when

setting

the

compensation

amount.

oSome EOS cameras cannot use infrared film. See

the instructions for your EOS camera.

[l]

•The infrared index position is based on a

wavelength of 800 nm.

•Be sure to observe the manufacturer's

instructions when using infrared film.

•Use ared filter also when you take the picture.

The

EW-83E

hood

can

keep

unwanted

light

out

the

lens,

and

also

protects

the

front

the

lens

from

rain,

snow,

and

dust.

attach

the

hood,

align

the

hood's

attachment

position

mark

with

the

red

dot

the

front

the

lens,

then

turn

the

hood

clockwise

until

the

lens's

red

dot

aligned

with

the

hood's

stop

position

mark.

The

hood

can

reverse-mounted

the

lens

for

storage.

o ·Part of the picture may be blocked if the hood is

not attached properly.

•

attach (remove) the hood, grasp the base of

the hood and turn it clockwise

(counterclockwise). Do not hold the hood by the

outer rim as this could result

the hood being

distorted if too much pressure is applied.

[51-7

You

can attach filters to the filter mounting thread

on the front of the lens.

•If you need apolarizing filter, use Canon's 77

PL-CII polarizing filter.

[ll

Only one filter may be attached.

11-8

There

agelatin 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.

oWhen you use agelatin filter, ghosting or flare

spots may appear

the image.

With Extension

Tube

12 or

25, the

camera-to-subject distance and image

magnification will be as follows:

Camera-to-Subject Magnification

Distance (mm)

Near Far Near IFar

EF12 17mm 155 159 0.83x I0.70x

40mm 206

271

0.59x I0.32x

EF25 17mm Incompatible Incompatible

40mm 196 218 1.02x I0.70x

GI-9

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