Canon EF 20mm f/2.8 USM Bruksanvisning

Canon Lins EF 20mm f/2.8 USM

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Thank you for purchasing a Canon product.

Safety 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.

1. Mounting and Detaching the Lens

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 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, and turn clockwise. To remove it, reverse the order.

2. Setting the Focus Mode

To shoot in autofocus (AF) mode, set the focus mode switch to AF

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To shoot in manual focus (MF) mode, set the focus mode switch

to MF, and focus by turning the focusing ring. The focusing ring

always works, regardless of 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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3. Innity 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

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• For accurate focusing in MF on subjects at infinity distance, look

through the viewfinder while rotating the focusing ring.

4. Infrared Index

The infrared index corrects the focus setting when using

monochrome nfrared film. Focus on the subject in MF, then

adjust the distance setting by moving the focusing ring to the

corresponding infrared index mark

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• Some EOS cameras cannot use infrared film. See the instructions

for your EOS camera.

• 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 a red filter also when you take the picture.

Nomenclature

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Distance scale

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Infrared index

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Distance index

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Contacts

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Lens mount index

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Focus mode switch

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Focusing ring

EF Lenses

EF14mm f/2.8L USM

EF20mm f/2.8 USM

EF24mm f/1.4L USM

EF28mm f/1.8 USM

EF35mm f/1.4L USM

EF50mm f/1.4 USM

EF85mm f/1.8 USM

EF100mm f/2 USM

EF200mm f/2.8L USM

Instructions

CT1-8536-003 1208SZ © CANON INC. 2006

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5. Filters

You can attach filters to the filter mounting thread on the front of

the lens.

• UseapolarizingCanonfilter.

Filter holder for the EF14mm f/2.8L USM

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

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6. Hood

Thelenshoodcankeepunwantedlightoutofthelens,andalso

protectsthelensfromrain,snow,anddust.

EF50mm f/1.4 USM

Fitthehoodtothehoodmount,thenturnitinthedirectionofthe

arrow to attach it securely.

EF20mm f/2.8 USM, EF24mm f/1.4L USM, EF28mm f/1.8 USM,

and EF35mm f/1.4L USM

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inthe

directionofthearrowuntilthelens’sreddotisalignedwiththe

hood’sstoppositionmark

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EF85mm f/1.8 USM and EF100mm f/2 USM

Press the buttons on both sides of the hood to attach

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EF200mm f/2.8L USM

Pullthehoodoutfromthefrontofthelensuntilitstops

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Lenses other than the EF14mm f/2.8L USM and EF200mm f/2.8L

USM

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.

The lens length is measured from the mount surface to the front

endofthelens.Add21.5mmtoincludetheE-58U/E-72Ulens

capanddustcap,and24.2mmfortheE-58II/E-72II.

 Thesizeandweightlistedareforthelensonly,exceptas

indicated.

 Aperturesettingsarespecifiedonthecamera.

 AlldatalistedismeasuredaccordingtoCanonstandards.

 Productspecificationsandappearancearesubjecttochange

without notice.

 Caseandhoodnotprovidedwithsomemodels.

 Filterssoldseparately.

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 modications to the equipment

unless otherwise specied in the instructions. If such changes

or modications 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 o 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 d gital apparatus complies with Canadian ICES-003.

Specications

Angle of view

Lens

construction

Minimum

aperture

Max.magnificationandfieldofview

Min. focusing

distance

Filter

diameter

Max.diameterandlength Weight Hood Case

Diagonal HorizontalVertical

EF14mmf/2.8LUSM 0.10X/246×375mm(9.7”×14.8”) 0.25m/0.82ft. 77×89mm(3.0”×3.5”) 560g/19.6oz.114° 81° 104° 10-14 22 *1 *2 LP1016

EF20mmf/2.8USM 94° 9-11 0.14X/176×264mm(6.9”×10.4”) 0.25m/0.82ft. 72mm 77.5×70.6mm(3.1”×2.8”) 405g/14.2oz. EW-75II62° 84° 22 LP1214

EF24mmf/1.4LUSM 74° 9-11 0.16X/150×227mm(5.9”×8.9”) 0.25m/0.82ft. 77mm 83.5×77.4mm(3.3”×3.1”) 550g/19.4oz.84° 53° 22 EW-83DII LP1214

EF28mmf/1.8USM 75° 9-10 0.18X/139×212mm(5.5”×8.3”) 0.25m/0.82ft. 73.6×55.6mm(2.9”×2.2”) 310g/10.9oz.46° 65° 22 58 mm EW-63II LP814

EF35mmf/1.4LUSM 9-11 0.18X/136×206mm(5.4”×8.1”) 0.3m/0.98ft. 72mm 79×86mm(3.1”×3.4”) 580g/20.5oz. EW-78C63° 38° 54° 22 LP1214

EF50mmf/1.4USM 27° 6-7 0.15X/164×249mm(6.5”×9.8”) 0.45m/1.48ft. 73.8×50.5mm(2.9”×2.0”) 290g/10.2oz. ES-71II46° 40° 22 58 mm LP1014

EF85mmf/1.8USM 7-9 0.13X/191×287mm(7.5”×11.3”) 0.85m/2.79ft. 75×71.5mm(3.0”×2.8”) 425g/14.9oz.28°30’16° 24° 22 58 mm ET-65III LP1014

EF100mmf/2USM 0.14X/175×262mm(6.9”×10.3”) 0.9m/2.95ft. 75×73.5mm(3.0”×2.9”) 460g/16.1oz.24° 14° 20° 6-8 22 58 mm ET-65III LP1014

EF200mmf/2.8LUSM 7° 7-9 0.16X/152×226mm(6”×8.9”) 1.5m/4.92ft. 72mm 83×136.2mm(3.3”×5.4”) 790g/27.7oz.12° 10° 32 *2 LH-D18

*1 Built-in gelatine lter holder

*2 Built-in

Produktspecifikationer

Varumärke:	Canon
Kategori:	Lins
Modell:	EF 20mm f/2.8 USM
Enhetsplacering:	Ingebouwd
Typ av operation:	Draaiknop
Färg på produkten:	Zwart
Inbyggd display:	Nee
Timer:	Nee
Vikt:	405 g
Bredd:	580 mm
Djup:	510 mm
Höjd:	43 mm
Sladdlängd:	1 m
Typ av material (överst):	Geglazuurd
Brännare/kokzonseffekt 2:	3000 W
Brännare/kokzonseffekt 3:	1700 W
Brännare/kokzonseffekt 1:	1700 W
Antal brännare/kokzoner:	4 zone(s)
Typ av häll:	Gaskookplaat
Brännare/kokzon typ 1:	Regulier
Brännare/kokzon typ 2:	Groot
Typ av brännare/kokzon 3:	Regulier
Lätt att städa:	Ja
Antal gasbrännare:	4 zone(s)
Antal elektroniska kokzoner:	0 zone(s)
Sjud brännare/kokzon:	1000 W
Normal brännare/kokzon:	1700 W
Kontrollposition:	Rechtsboven
Stor brännare/kokzon:	1700 W
Ansluten last (gas):	7400 W
Diameter:	77.5 mm
Fast brännvidd:	20 mm
Extra stor höghastighetskokzon:	3000 W
Certifiering:	CE
Typ av brännare/kokzon 4:	Sudderen
Brännare/kokzonseffekt 4:	1000 W
Strömkälla brännare/kokzon 1:	Gas
Strömkälla brännare/kokzon 2:	Gas
Strömkälla brännare/kokzon 3:	Gas
Strömkälla för brännare/kokzon 4:	Gas
Placera brännare/kokzon 1:	Links achter
Placera brännare/kokzon 2:	Links voor
Placera brännare/kokzon 3:	Rechts achter
Placera brännare/kokzon 4:	Rechts voor
Kokzon 1 form:	Rond
Kokzon 2 form:	Rond
Förstoring:	0.14 x
Filterstorlek:	72 mm
Kokzon 3 form:	Rond
Kokzon 4 form:	Rond
Linstyp:	Ultravidvinkelobjektiv
Komponent för:	SLR
AC-ingångsfrekvens:	50 - 60 Hz
AF ställdon:	USM
Produktens färg:	Svart
Största bländarnummer:	22
Produktlängd:	70.6 mm
Objektivets betraktningsvinkel, horisontell:	84 °
Närmsta fokusavstånd:	0.25 m
Objektiv-struktur (element/grupper):	11/9
Antal diafragmablad:	5
Linsmonteringsgränssnitt:	Canon EF
Objektivets betraktningsvinkel, vertikal:	62 °
Objektivets betraktningsvinkel, diagonal:	94 °