Flashes & lighting
Olympus T20 User manual
User manual for Olympus T20. 28 pages in English. Read the original PDF, download or print a copy without registration.
28 pagesEnglish2.5 MB PDF
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Document details
- Brand
- Olympus
- Model / document
- Olympus T20
- Document type
- User manual
- Language
- English
- Pages
- 28
- File size
- 2.5 MB
- Category
- Flashes & lighting
- Document date
- Not specified in catalog
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Page 3 · Read text
ELECTRONICFLASHT2OOPERATINGINSTRUCTIONS
We greatly appreciatethat you have acquired the specialOlVmpus Electronic Flash T20
This fully automatic, electronically controlled flash unit is equipped with the epoch-
making method "TTL Centralized Control" developed by Olympus, also called TTL Auto
Flash. lt can also be switched for normal auto/manual control.
We ask you to familiarize yourself with its functions and operation in order to take advan-
tage of all its possibilitiesin photography.
T20 FlashPhotography
Camera Selectionof Mount Selectionof Flash Mode
. TTL Centralized Control Accessory Shoe OM-2ru . Normal Auto 4 o Manual
Accessory Shoe o Normal Auto OM-1 rrr 4 . Manual
oM-10 Built onto the camera . Normal Auto . Manual
. TTL CentralizedControl Accessory Shoe o NormalAuto 3 oM-2 a Manual (1/60 sec cannotbe used)
Accessory Shoe o Normal Auto
1 o r 2 o Manual
oM-1 Accessory1 Shoe .o MNormala n u a l Auto catedF lash modesin red indi.pro-
. NormalAuto vide the viewfinder Other Cameras Hot Shoe charge/auto check
o Manual signal.
www.orphancameras.comView original page 3Page 7 · Read text
MAINSPECTFtcArloffs"i
o Type: E nergy-saving, series-circuit type TTL TTL AUTO Check: Neon-flicker indication. View-
Centralized Control (TTL AUTOI flash finder indication contact provided.
unit (with normal auto and manual capa- Ready Light Check: Charge lamp and viewfinder
b i l i t y ) . indication contact.
o TTL AUTO Range (ASA 100)o Guide Number: 20(ASA100, meters) or 66(,454100,
feet). F o r G u i d a n c eO n l y
o CoverageAngle: 40" vertical, 58o horizontal (covers 3 . 3 - 1 5 . 7 m1( 0 . 8 - 5 4 . 8 f t )
picture area of 35mm lens). 22 . 8- - t104 .I mm (( 96 .. 25 -- 43 62 .. 38 fft r) )
o Ffash Duration: 1l4O,OOO- 1/1,000 sec. 1 . 4 - 7 . l m ( 4 . 6 - 2 3 . 3 tf )
| - 5 m ( 3 . 3 - l 6 . 4 f t )
o ReoyclingTime: O.2-10sec. with AA alkaline batteries r Two types of T20 are available, each incorporating a calculator
on TTL AUTO and NORMAL AUTO (varies panel indicated in meters or in feet.
o N O R M A L A U T O depending on flash-to-subjectd istance).
o Ffashesper set of AA Alkaline Batteries: 12O - 500 on Aperture Setting: 2 apertures (F4 and F8 at ASA 100).
TTL AUTO and NORMAL AUTO (varies Normal Auto Sensor AcceptanceAngle: Approx. 20".
Working Range: 1 - 5m (3.3ft.-17tt.l at F4, depending on flash-to-subjectdistance).
o Color Temperature: 5,800'K. 0.5 - 2.5m (20in. - 8ft.) at F8.
o Connection to Camera AUTO & Ready Light Check: Same as TTL AUTO
Mechanical: Clip-on type (via accessoryshoe). and Ready Light Check above.
Electrical: Direct contact (hot shoe) o M A N U A L
o Exposure Calculator: Reversibleplate type - blank for Guide Number: 20 (ASA100, m) or 66 (ASA100, ft.)
Olympus OM-2 (TTL Auto/Manuat); cat- on f ull power f lash.
culator for OM-1, OM-l0 and non-OM Ready Light Check: Charge lamp and viewfinder
cameras (Normal Auto/Manual). indication contact.
o TTL AUTO (with OM-2 onlyl oTermination of Light Emission: Instantaneous. With
power switch off , T2O will not fire even Aperture Setting Continuous, couples with aperture
ring setting of camera lens. when fully charged.
o Power Source: @ Two 1.5V AA ,penlight, batteries I SBC Sensor Acceptance Angle; Matches view of camera
(incl. Ni-Cd batteries). @ AC house current lens.
Working Range: O.25-16m(1Oin.-S3ft.)(ASA 100, F . via Electronic Flash AC Adapter 2.
o Dimensions: 77 (Dl x 68 (W) x 57 (H) mm, 160g 1 .2 lens).
www.orphancameras.com (lessbatteries)
1 3 x 2 . 7 x 2 . 2 " , 5 . 6 o z . ) .View original page 7Page 8 · Read text
LOADINGTHE BATTERIES MOUNTINGTHE T2O
r)
-
Insert two 1.5V AA size batteries Slide the T20 into the ac-
properly. cessory shoe and turn the YESThere are availableUM-3 type man- lock knob in the direction of
ganesebatteries,AM-3 type alkaline the arrow to lock the f lash in
batteries, and NR-AA type Ni-Cd posttton.
batteries. Alkaline batteries last
about 4 times longer than man-
ganesebatteries.
NOView original page 8Page 10 · Read text
SWITCHTHE T2O ON; AND THE FLASHUNIT
WILLBE DIRECTLYCONTROLLEDBY THE OM.2.
All dial settings required of conventional electronic flash
units (ASA film speed setting, auto/manual mode switching,
exposure compensation in diffused lighting, etc.) are not
needed with the T20. The T20loM-2 combination enables
you to perform the easiest,most preciseflash photography
ever.View original page 10Page 11 · Read text
TTL AUTO FLASHUSINGTHE T2O AND THE OM.z
125250$001000
With the calculator panel in the'full automatic control by Set the camera'sselector lever
OM-2' position, turn the power switch to the ,,ON,, to "AUTO". ?HLCY\.RESIT
position. Set the aperture ring.
* Any aperture can be used for TTL AUTO Flashphotogra-
(NOTE) lf you want to take pictureswith existing light, phy with the T20 and the OM-2. For averageindoor flash
turn the T2O off; the charge lamp goes out and the T20 photography the aperture setting at F4 will provide good
will not f ire even when the capacitor is fully charged. resuI ts.
www.orphancameras.comView original page 11Page 15 · Read text
NORMALAUTO FLASHUSINGTHE
Set the flash to "AUTO" (2 f/stop positions). Turn the T20 ON.
F4 for general F8 for close-uP
photography photograPhY
with ASA1O0 w i t h i n 1 m
(3.3ft)
( A S A 1 0 0 )
Aliqn the white line with either one of the F numbers in-
dicated by the Q marks, once you've set the proper ASA
speed. Set the lens aperture at the F number indicated by
the white line.
Set the shutterspeedto 1/30 sec.
* T h e O M - 1 s y n c h r o n i z e s with e le ctro n ic f la sh a t th e sh u tte r
s p e e d o f 1 / 6 0 s e c . o r s l o we r. Ho we ve r, to e limin a te a n y
p o s s ibi l i t y o f a c c i d e n t a l d ia l sh iftin g , it is re co mme n d e d
y o u us e t h e 1 / 3 0 s e c . s e ttin g . www.orphancameras.com t 3View original page 15Page 19 · Read text
NORMALAUTO FLASHUSINGTHE T2OAND THE OM.I.O
Set the flash to "AUTO" (2 f/stop positions). Turn the power switch of both
F4 for general F8 for close-up the flash and the camera to ON.
photography photography
with ASA 100 w i t h i n 1 m ( 3 . 3
f t ) ( A S A 1 0 0 )
Align the white line with either
one of the two F numbersindicat-
ed by tne Q marks, once you've
set the proper ASA speed.
Set the lens aperture at the F num-
ber indicated by the white line.
* Shutterspeedis automaticallyset
at 1/60 second(f lashsYnchroniz-
ing shutter speed). www.orphancameras.comView original page 19Page 23 · Read text
FLASHPHOTOGRAPHYIN SPECIALSITUATIONS
Portraits at night with the sky in the background Compensation
A t n i g h t w i t h t h e s k y i n t h e b a c k g r o u n d , o r i n s i t u a t i o n s i n (With the OM-2)
which no flash light reaches the background because it is Turn the exposurecompensationdial
t o o f a r , p h o t o g r a p h s o f p e o p l e w i l l b e o v e r € x p o s e d . M a k e to the minus (-) side (- t - -2 at
the proper compensation as follows. click-stoppositions).
( W i t h t h e O M - 1, O M - 1 0 , o r o t h e r
cameras)
C lose the lens aperture one or two F stops beyond the
apertureset on the T2O.
www.orphancameras.com 2 lView original page 23Page 24 · Read text
Daylight Fill-in Flash
Y o u m a y o f t e n w a n t t o l i g h t a b a c k l i t s u b j e c t , o r t h e In such situations,the TTL AuTo and NoRMAL AUTO
shadow under a tree, or indoors with part of the outdoor operations are possible, but may be considerably affected
scene in the background, with good contrast in the details by the existing light and subject conditions.Therefore,
of the shadowy parts as well as the surroundings. MAN UA L operation is recommended.
22View original page 24Page 25 · Read text
MANUAL FLASH
(With the OM-2> <With the OM-l, OM-10, and other cameras>
Set the camera'sselector lever to "MANUAL". Set the flash at the "MANUAL" position.
Read the F-number and set the aperture ring. Set the aperture on the camera lens at the value
Selectthe aperturebasedon flash-to-subjectdistanceand which corresponds with the planned flash-to-subject
with a guidenumberof 20 (ASA 100, meters)or66 (ASA distance as shown in the calculator panel.100,feet).
Set the shutter speed to 1/30 sec.
Set the shutter speed to 1/30 sec. * With the OM-10(setat AUTO, andT20 turnedON), theTurn the powerswitchof the T20 to the,,ON,,position, shutter speed is automaticallyset to 1/60 sec.,allowingand press the shutter releaseafter the signal light beginsto f lash synch r onization.glow.
* When set for manual control, by simply turning the Turn the T20 on and press the shutter releaseafter
calculator panel over, the relation between distance and the charge signal light begins glowing.
aperture can be seen. * The charge signal can be seen both in the viewfinder and
on the back of the T20. In MANUAL f lashoperation,the
www.orphancameras.comlamp will not f licker.
23View original page 25Page 27 · Read text
HANDLINGCARE CARE FORSTORAGE '
O Rs the color temperature of the T20 is similar to that of O Do not exert stronger force upon the T20 than it needs,
daylight,use daylight color films. when it is attachedto or detachedfrom the camera.
@ Wfren the T2O is attached to the camera, tighten the @ Oo not apply excessivepressure to the flash diffuser
lock knob securely. window.
@ Replace both batteriesat the same time and with new @ Oo not hit the flash unit and do not let it strike any
batteries. hard object.'@
Rt sub-zerotemperatures,the circuits and batterieswill @ Oo not keep the unit in locationswherehumidity is high.
not function normally. So, warm them sufficiently be- @ Oo not leave the unit in placeswith temperatureover
fore use. 122" F (50'C).
@ When the T20 is suddenly moved from a low to a high @ LeavingtheswitchON shortensbattery life.
temperature location, condensationwi ll not allow the @ Wfren the flash is not to be usedfora longperiodof time,
f lash to function. remove the batteriesto prevent leakage.
@ The charge signal lamp in the camera viewfinder can @ fo carry the unit conveniently, put it in an accessory
often be seenbrightly just after tharging. leather caseor the Lens pouch 1OO.
@ tnttl AUTO flash operation,do not removethe power
plug when taking pictures with the AC Adapter. The
f l a s hw i l l e m i t i t s f u l l l i g h t o u t p u t .
@ tn ttt AUTO flash operation, use Accessory Shoe 3,
when combining the T20 with the OM-2 (which is en-
graved with the symbol mark "OM-2"1. ln MANUAL,
with the samecombination, set the shutter speedlower
than 1/30 sec. The 1/60 sec. shutter speed does not
synchronizewith flash
@ Cameraswithout hot shoe cannot be used.
@ Handtethe CalculatorPanelwith care.
www.orphancameras.com 25View original page 27Page 28 · Read text
x.
REDEYEEFFECT
"Red Eve" is the phenomenon experiencedwhen the subject'spupils appear red in colorF photographs made by flash. lt occurs when the flash enters directly through the subject's
pupil and is reflectedby the retina into the camera lens. lt usually occurs in relativedarkne5s
when the pupil remainsopen.
To minimize this problem:I
1. llluminate the room so that the pupil will not dilate. Also effective is having the subject
look at a bright light 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 Bounce
Grip 2, TTL Auto Cord or the Electronic Flash Extender between the flash and the hot
shoe.
3. Bounce flash prevents"red eye" effect completely.
4. Sophisticated professionalsavoid photographing subjects straight-on, not only to avoid
"red eye" but to enhance photographic quality. Shooting from an angle providesmodel-
ing light which is artistically more appealing by eliminating the unattractive effect flat
lighting provides. lt is preferableto avoid having the subject look directly into the lens
for the same artistic reason.View original page 28From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.