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ELECTRONIC FLASH T2O OPERATING INSTRUCTIONS

We great ly appreciate that you have acquired the specia l Olympus Electronic Flash T20.

This fu l ly automat ic, e lectronical ly contro l led f lash uni t is equipped wi th the epoch-

making method "TTL Central ized Control" developed by Olympus, a lso cal led TTL Auto

Flash. l t can also be swi tched for normal auto/manual contro l '

We ask you to fami l iar ize yoursel f wi th i ts funct ions and operat ion in order to take advan-

tage of a l l i ts possib i l i t ies in photography.

T20 Flash PhotograPhY

Flash modes indi-cated in red pro-v ide the v iewf indercharge/auto checksignal .

CameraSelect ion of

Accessory ShoeSelect ion of TTLAUTO Connector

Selection of Flash Mode

OM.2N Shoe 4 Type 4. TTL Autor Normal Auto. Manual

O M . l N Shoe 4 Type 4r Normal Autoo Manual

oM-10OMlO OUARTZoM-30 (oM-FloM-20 (oM-Gl

Bui l t ontothe camera

. Normal Auto

. Manual

oM-2

Shoe 3 Type 3o TTL Autoo Normal Autoo Manual (1/30 sec.

sync. l

Shoe 2o Normal Autoo Manual

oM-1 Shoe 1. Normal Autoo Manual

Other Cameras Hot Shoer Normal Autoo Manual

TABLE OF CONTENTS

aT20 Flash PhotographyoTable of ContentsO Descr ipt ion of ControlsO Main Speci f icat ionso Loading the Batter ieso Moun t i ng t he T20

oNoRMAL AUTO Flash Using the T20 and the OM-30 (OM-FI .

oM-20 (oM-G) .OM-1 0 . OM- l0 oUARTZ

OTTL AUTO Flash Using the T20 and the OM-2

aNORMAL AUTO Flash Using the T20 and the OM-1( & C a m e r a s o t h e r t h a n O M ) . . . . . . . . . . 1 5

a A d v a n c e d T e c h n i q u e s . . . . . . . . 1 9o C a l c u l a t o r P a n e l . . . . 2 Oo Ffash Photography in Special Si tuat ions . . . . . .21. M A N U A L F l a s h . . . . 2 3o H a n d l i n g C a r e . . . . . . 2 5o C a r e f o r s t o r a g e . . . . . 2 5

123566

71 1

F lash Di f f userWindow

Lock Knob o-

NORMAL AUTOSensor Window

TTL AUTO Panel (b lank)

Power Switch

Charge Lamp

3

Calculator Panelf o r NORMAL

AUTO/MANUAL mode( indicated in meters)

ASA Scale

Distance Scale

Mode Switching Knob

Mode Switching KnobIndex Mark

Battery Chamber

Calculator PanelSwitching Button

N O R M A L A U T O Index Mark

Calcu lator Panel( indicated in feet)

4

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o Type: Energy-saving, ser ies-c i rcui t type TTL

Central ized Control (TTL AUTO) f lash

uni t (wi th normal auto and manual capa-

b i l i t y ) .

. Guide Number: 2o(ASA100, meters l or 66(45A100,feet) .

o Coverage Angle: 40" vertical, 58" horizontal (covers

picture area of 35mm lens).

o Flash Duration : 1 /40,000 - 'l / 1 ,000 sec.

. Recycl ing Time: 0.2-10sec' wi th AA alkal ine bat ter ies

on TTL AUTO and NORMAL AUTO (var ies

depending on f lash-to 'subiect d istance) '

. Flashes per set of AA Alkaline Batteries: 120 - 500 on

TTL AUTO and NORMAL AUTO (VATiES

depending on f lash-to-subiect d istance) 'o Color Temperature: 5,800" K'. Connection to Camera

Mechanical : Cl ip-on type (v ia accessory shoe) '

Electr ical : Direct contact (hot shoe).

r Exposure Calculator :Reversib leplate type - b lank for

Olympus OM-2 (TTL Auto/Manual) ; cal -

culator for OM-30 (OM-F),OM-20 (OM-G),

OM-10, OM-10 OUARTZ, OM-1 and non-

OM cameras (Normal Auto/Manual) .

o TTL AUTO (wi th OM-2 onlYl

Aperture Sett ingu Cont inuous, couples wi th aperture

r ing set t ing of camera lens'

SBC Sensor Acceptance Angle: Matches v iew of camera

lens.0.25-1 6m( 1 0in.-53ft.) (ASA 1 00, F1 .2 lens) .

5

f inder indication contact provided.

Ready Light Check: Charge lamp and v iewf inder

indicat ion contact .. TTL AUTO Range (ASA 100)

Fo r Gu idance On lY

3 . 3 - 1 6 . 7 m ( 1 0 . 8 - - 5 4 . 8 f t2 . 8 - l 4 . l m ( 9 . 2 - 4 6 . 3 f t2 - - l 0 m ( 6 . 6 - 3 2 . 8 f t1 . 4 - 7 . l m ( 4 . 6 - 2 3 . 3 1 1| - 5 m ( 3 . 3 - l 6 . 4 f t )

' Two types of T20 are avai lable, each incorporat ing a calculatorpanel indicated in meters or in feel .

oNORMAL AUTOApertureSett ing: 2 apertures (F4 and F8 at ASA 10O)

Normal Auto Sensor Acceptance Angle: Approx. 20"

Working Range: 1 - 5m (3.3f t . -17f t . ) at F4,

0 '5 - 2.5m (20in. - 8f t ' ) at F8'

AUTO & Ready Light Check: Same as TTL AUTO

and Ready Light Check above..MANUAL

b-uioe i r iumU"r: 20 (ASA100, m) or 66 (ASA100, f t . )

on fu l l Power f lash'

Ready Light Check: Charge lamp and v iewf inder

indicat ion contact .. Termination of Light Emission: Instantaneous. With

power swi tch of f , T20 wi l l not f i re evenwhen fu l ly charged.

.PowerSource: @ Two 1.5V AA'penl ight ' bat ter ies( incl . Ni-Cd bat ter ies) . @ AC house currentv ia Electronic Flash AC AdaPter 2.

.Dimensions: 77 (D) x 68 (W) x 57 (H) mm' 1609( less batteriesl

1 3 x 2 . 7 x 2 . 2 " , 5 . 6 o z . l .

MAIN SPECIFICATIONSAUTOCheck: Neon-f l icker indicat ion.

Working Range:

I

LOADING THE BATTERIES MOUNTING THE T2O

Insert two 1,5V AA size batteriesproperly.

There are avai lable UM-3 type man-ganese bat ter ies, AM-3 type alkal ine

batter ies, and NR-AA type Ni-Cd

batter ies. Alkal ine bat ter ies last

about 4 t imes longer than man-ganese batteries.

YES

ilt-}NO

Sl ide the T20 into the ac-

cessory shoe and turn the

lock knob in the di rect ion of

the arrow to lock the f lash in

oosi t ion.

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Press the button and remove the calculator panel. Set the ASA fi lmspeed.

Slide the calculatorpanel to the left asfar as it wil l go, unti li t "clicks" into place.

NORMAL AUTO FLASH USING THE T20 AND THE OM-3o(OM-F).OM-2o(OM

Turn the power switch of boththe f lash and the camera to ON.F4 for general

photographyw i t h ASA 100

A l i gn t he wh i t e l i ne w i t h e i t he rone o f t he two F numbers i nd i ca t -ed by the Q marks, once you've

set the proper ASA sPeed.

Set the lens aper tu re a t the F num-

ber indicated by the white l ine.Shutter speed is automatical ly seta t 1 /60 second ( f lash sYnchron iz -

F8 for c lose-upphotographyw i t h i n 1 m ( 3 . 3f t ) (ASA 100 )

Set the f lash to "AUTO" (2 f/stop posit ions).

oM-10

i ng shu t t e r speed ) . \_

.G) .OM-t 0.oM-10 QUARTZoM.10oM-10

iloM-20 (oM-G)

IoM-30 (oM.Fl

Wait unti l the charges igna l l igh ts on .

The charge s ignal can beseen both in the v iewf inderand on the back of theT20 .

Focus and press the shutter release.l f t he s i gna l l i gh t b l i nks r epea ted l y , t he p i c t u rewasp rope r l yexposed by f lash.

(Note)* l f the s ignal l ight goes out , the subiecr is too far . Get c loser

to the subiect .

t 0

SWITCH THE T20 ON; AND THE FLASH UNIT

WILL BE DIRECTLY CONTROLLED BY THE OM-2.

Al l d ia l set t ings required of convent ional e lectronic f lashuni ts (ASA f i lm speed set t ing, auto/manual mode swi tching,exposure compensat ion in d i f fused. l ight ing, etc.) are notneeded wi th the T20. The T2OIOM-2 combinat ion enablesyou to perform the easiest, most precise flash photographyeve r.

I TTL AUTO FLASH US|NG THE T20 AND THE OM-2

With the calculator panel in the ' fu l l automat ic contro l byOM-2'posi t ion, turn the power swi tch to the "ON"position.

(NOTE) l f you wan t t o t ake p i c t u res w i t h ex i s t i ng l i gh t ,turn the T2O of f ; the charge lamp goes out and the T20w i l l no t f i r e even when t he capac i t o r i s f u l l y cha rged .

Set the camera's selector leverto "AUTO".

Set the aperture r ing.

* Any aperture can be used for TTL AUTO Flash photogra-phy w i t h t he T20 and t he OM-2 . Fo r ave rage i ndoo r f l a shpho tog raphy t he ape r t u re se t t i ng a t F4 w i l l , p rov i de goodresu l t s .

]HECK. RESET

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Wait unti l the charge signal l ights on.

* T h e c h a r g e s i g n a l c a n b e s e e n b o t h i n t h e v i e w f i n d e r a n don the back o f the T2O.

Focus and press the shutter release.l f t h e s i g n a l l i g h t b l i n k s r e p e a t e d l y , t h e p i c t u r e w a s p r o p e r -ly exposed bv f lash .* l f t h e s i q n a l l i g h t d o e s n o t b l i n k , b u t i n s t e a d g o e s o u t :

The sub jec t l s too fa r . Choose a la rger aper tu re o r ge tc loser to the sub jec t .

* l f t h e s i g n a l s t a y s l i t ( t h e T 2 O d i d n o t f i r e ) :T h e s u b j e c t i s b r i g h t e n o u g h a n d t h e p i c t u r e w a s t a k e np r o p e r l y b y e x i s t i n g l i g h t . T h e f l a s h l i g h t w a s n o t n e e d e d .

In case exposure must be achieved by f lashi l l u m i na t i on :Tu rn t he ape r t u re r i ng un t i l t he me te rneedle points to 1/30 sec. or s lower, andshoot.

I

NORMAL AUTO FLASH PHOTOGRAPHY USING THE T2OAND THE OM.l(& CAMERAS OTHER THAN

Press the button and remove the calculatorpanel .

Set the ASA f i lmspeed.Slide the calculatorpanel to the left asfar as i t wi l l go, unti li t cl icks into place.

rt 5

NORMAL AUTO FLASH USING THE T2O AND THE OM-l

set the flash to "AUTo" (2 f/stop positions). Turn the T20 ON.F4 f o r gene ra lphotograpnyw i t h ASA100

F8 for c lose-uPphotographYw i th i n 1 m(3 .3 f t )(ASA 100 )

A l i gn t he wh i t e l i ne w i t h e i t he r one o f t he F numbers t n 'd icated by the Q marks, once you've set the proper ASAspeed. Set the lens aperture at the F number indicated bythe wh i t e I i ne .Set the shutter speed to 1/30 sec.* The OM-1 svnch ron i zes w i t h e l ec t r on i c f l a sh a t t he shu t t e r

speed o f 1 /60 sec . o r s l owe r . Howeve r , t o e l im ina te anyposs ib i l i t y o f acc i den ta l d i a l sh i f t i ng , i t i s r ecommendedyou use t he 1 /30 sec . se t t i ng .

t 7

Wait unti l the charges igna l l igh ts on .

* The charge s ignal can beseen both in the v iew-f i nde r and on t he back o fthe T20.

Focus and press the shutter release.l f t he s i gna l l i gh t b l i nks r epea ted l y , t he p i c t u re was p rope r -ly exposed by f lash.

{ N O T E )* l f the signal l ight goes out, the subiect is too far. Get closer

to the subiect.

t 8

CALCULATOR PANEL

ASA ScaleOnce the ASA f i lm speed is se t , the sub jec t d is -tance wh ich cor responds to each aper tu re i sshown. Remove the ca lcu la to r pane l and se t thef i lm speed under the index mark I a t the topof the pane l .

Distance Scalo

Coup l ing Range o f TTL AUTOAny aper tu re can b€ us€d fo r TTL Auto F lashphoto'graphy with the OM-2 and th€ T2O. Themax imum usab ls f lash- to -sub iec t d is tanco isa p p r o x i m a t e l y 1 4 m ( 4 6 f t . ) w i t h F 1 , 4 , a n d a p -p r o x i m a t e l y 1 0 m ( 3 3 f t . ) w i t h F 2 , u s i n g A S A 1 O O .

MANUAL Index Mark

In manua l f lash photography , s€ lec t the Fnumber cor rsspond ing to the f lash- to -sub iec t d is -tance. For exampl€ . F2 fo r ad is tanceof approx i -mate ly 1Om(33f t . ) and F4 fo r approx imate ly5 m ( 1 7 f t . ) , u s i n g A S A 1 O 0 .

Mode Switciing Knob Index Mark

ASA lndex Mark

ASA Switching KnobSl ide the scale in one di rect ion or the othsr inorder to set the ASA f i lm speed. The numberw i l l appea r i n t ha ASA Window .

Aperture Scale

Mode Switching KnobS l i d e t h e s w i t c h t o M A N U A L o r A U T O . ( T h e r eare two A iUTO pos i t ions . ) Set i t a t the des i redc l i ck -s top pos i t ion to dec ide the mod€ o fphotography .

NORMAL AUTO Index MarkWhen se t to the le f t index mark- the max imumusab le f lash- to -sub jec t d is tance is approx imate-l y 5 m ( 1 7 f t . ) , u s i n g .W h e n s e t t o t h e r i g h t i n d e x m a r k , t h s m a x i m u musab le f lash- to -sub jec t d is tance is approx imate-l y 2 . 5 m ( 8 f t . ) , u s i n g .

] rusH pxoroenRPnvIN SPEGIAL SITUATIONS- - ]

Portraits at night with the sky in the backgroundAt n i gh t w i t h t he sky i n t he backg round . o r i n s i t ua t i ons i n

which no f lash l ight reaches the background because i t istoo far , photographs of people wi l l be overexposed. Make

the proper compensat ion as f o l lows.

Compensation<with the oM-2>Turn the exposure compensat ion dia l

to the minus (- ) s ide l -1 - -2 at

c l ick-stop Posi t ions).

<w i t h t he oM-1 , oM-10 , o r o the r

cameras>Close the lens aperture one or two F stops beyond the

aperture set on the T20.

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Day l i gh t F i l l - i n F l ash

You may o f t en wan t t o l i gh t a back l i t sub iec t , o r t heshadow under a t ree, or indoors wi th part of the outdoorscene in the background, wi th good contrast in the detai lsof the shadowv parts as wel l as the surroundings.

I n such s i t ua t i ons , t he TTL AUTO and NORMAL AUTO

operat ions are possib le, but may be considerably af fected

by t he ex i s t i ng l i gh t and sub jec t cond i t i ons .The re fo re ,MANUAL ope ra t i on i s r ecommended .

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T

i MANUAL FLASH

CHECK. RESET

<with the oM-2>Set the camera's selector lever to "MANUAL".

Read the F-number and set the aperture ring'Select the aperture based on f lash-to-subiect d istance andw i t h a gu ide number o f 20 (ASA 100 , me te r s ) o r66 (ASA

1 00, feet) .

Set the shutter speed to 1/30 sec.Turn t he power sw i t ch o f t he T20 t o t he "ON" pos i r r on .and press the shut ter re lease af ter the s ignal l ight begins toglow.* When set for manual contro l , by s imply turning the

calculator panel over, the re lat ion between distance anoaperture can be seen.

<With the OM-1, OM-10, and other cameras>Set the f lash at the "MANUAL" posit ion.

Set the aperture on the camera lens at the valuewhich corresponds with the planned f lash-to-subjectdistance as Shown in the calculator panel.

Set the shutter speed to 1 /30 sec.* w i th the oM-30 (oM-F) . oM-20 (oM_c) , oM-10. oM_10

OUARTZ (se t a t AUTO, and T20 tu rned ON) , the shut te rspeed is automatical ly set to 1/60 sec., al lowing f lashsynch ron ization.

Turn the T20 on and press the shutter release afterthe charge signal l ight begins glowing.* The charge s ignal can be seen both in the vtewf inder and

on t he back o f t he T20 . I n MANUAL f l a sh ope ra t i on . t hel amp w i l l no t f l i c ke r .t 5

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HANDLING GARE CARE FOR STORAGE

(D As the color temperature of the T20 is similar to that ofdayl ight , use dayl ight color f i lms.

@ Wtren the T20 is attached to the camera. tighten thelock knob securely.

@ Reptace both batteries at the same time and with newbatteries.

@ At sub-zero temperatures, the circuits and batteries willnot function normally, So, warm them sufficiently be-fore use.

@ When the T20 is suddenly moved from a low to a hightemperature location, condensation will not allow theflash to function.

@ The charge signal lamp in the camera viewfinder canoften be seen brightly just after iharging.

@ In TTL AUTO f lash operation, do not remove the powerplug when taking pictures with the AC Adapter. Thef lash wi l l emit i ts fu l l l ight output .

@ tn ttL AUTO ftash operation, use Accessory Shoe 3,when combining the T20 with the OM-2 (which is en-graved with the symbol mark "OM-2"1. In MANUAL,with the same combination, set the shutter speed lowerthan 1/30 sec. The 1/60 sec. shutter speed does notsynchronize with flash.

@ Cdmeras without hot shoe cannot be used.@ Handle the Calculator Panel with care.

@ Do not exert stronger force upon the T20 than it needs,when it. is attached to or detached from the camera.

@ Do not apply excessive pressure to the flash diffuserwindow,

@ Do not h i t the f lash uni t and do not let i t s t r ike anyhard object.

@ Do not keep the unit in locations where humidity is high.@ Do not leave the unit in places with temperature over

122 'F ( 50 'C ) .

@ Leaving the switch ON shortens battery life.@ When the f lash is not to be used fora long per iod of t ime.

remove the batteries to prevent leakage,@ To carry the unit conveniently, put it in an accessory

leather case or the Lens Pouch 100.

RED EYE EFFECT

"Red Eye" is the phenomenon experienced when the subject's pupils appear red in colorphotographs made by flash. lt occurs when the flash enters directly through the subject'spupil and is reflected by the retina into the camera lens. lt usually occurs in relative darknesswhen the pupi l remains open.

To minimize this problem:

1. l l luminate the room so that the pupil wil l not dilate. Also effective is having the subjectlook at a bright l ight before taking the picture in order to narrow the pupil.

2. Widen the distance between the flash surface and camera lens by using the Power BounceGrip 2, TTL Auto Cord or the Electronic Flash Extender between the flash and the hotshoe.

3. Bounce flash prevents "red eye" effect completely.

4. Sophisticated professionals avoid photographing subjects straight-on, not only to avoid"red eye" but to enhance photographic quality. Shooting from an angle provides model-ing l ight which is artistically more appealing by eliminating the unattractive effect f latl ighting provides. lt is preferable to avoid having the subject look directly into the lensfor the same artistic reason.