Minolta VECTIS 25 User manual

MIt\OLTA
AUIJ FL.ECTROFLASH
25
OWNER'SMANUAL
e
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Incorrect
reassembly
shock hazard when
subsequently.
cause
electric
unit is used
can
the
SAVE THESE
INSTRUCTIONS
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This compact, easy-to-use unit makes perfect automatic flash expo- e
sures over a considerable range and is also usable as a conventional
non-auto flashgun. lt can be attached cordlessly on cameras having a
direct-contact "hot shoe" or by means of an attachable cord with
conventional brackets and terminals.
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NAMES
OF PARTS
Flash tube and ref
lector
with guard window
Sensor
Auto/manual switch
Attach ing bracket
Cord less contact
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Battery-chamber cover
Distancescale
Aperture scale
Computer dial
Film-speedscale
Monitor lamp
Sync. cord socket
Power switch
O
pen-f
lash/test button
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BATTER IES
1. To install, open the battery
chamber cover by sliding it
off in the direction of the
arrow toward the back of
the unit.
2. Insert f
our batteries (see
specs
p. 15), mak
ing sure that plus
(+) and minus (-) ends of
batteries are positioned as in-
dicated in
side the battery
chamber.
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3. Close the cover bY aligning it
carefully and sliding it on to-
ward the front of the unit
until it is securelY in Place.
When the monitor lamP fails
to light with in a reasonable
time, say 30 seconds, with the
power switch oh, rePlace all
four batteries with f resh ones
at the same time.
CAUTION:
o The Auto Electroflash 25 is
designed to use only non-re-
chargeable a
lkaI
ine-ma
nganese
or sealed
carbon-zinc batteries
as specif
ied; the f
ormer are
recommended.
Do not use
nickel-cadmium or
other rechargeable batteries,
as this may seriously damage
the u
n
it.
o Battery contacts shou
ld not
be touched with the f
ingers
and should be cleaned with a
dry rough cloth before inser-
tion.
q
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ATT'l\Cl"{ r$1fi T* CAIVI
g i{ rA
With cameras wired for cordless
flash. simply slide the attaching
bracket of the flashgun all the
way into the camera hot shoe.
F
or other cameras, slide the
bracket into the accessory or
flashgun shoe, insert the single-
prong plug end of attachable
sync. cord into the sync. cord
socket until it catches, and plug
the PC connection on the other
end into the "X"-synchron iza-
tion terminai on the camera.
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I
l
1. Make sure that the camera is
set
for X sync. and/or that the
flashgun is properly connect_
ed with the X sync.
terminal
or tne camera.
2. Also make sure that the cam_
era is not set for a shutter
speed
faster than the manufac_
turer's recommendation for
electronic flash (usually 1/60
or stower for full_f
rame 35mm
cameras
having horizontal_run
rocal-plane
shutters).
'i:.:. i
L1t", Jnu computer diat to align
tne triangular black inOex wiih
tl-re exposure-rating number of
rne trlm you are using. (Dots
between numbers on the film_
speed _
scale represent ASA rat_
Ils_s
of 32,40,64,80, 125,160,
??O, Za 320 or Oil',t
tnO""", oi
:P,_:r,.
1?,
70,
22,
23,
."i zs,
respectively f
rom left to right. j
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10
POWER SWITCH
To turn the unit on and charge
the capacitor, move the Power
switch to "ON." When you are
not taking pictures, the switch
should
be kept in its
"OFF."
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AUTOMATIC OPERATION
1. Make sure that the auto/man-
ual switch is all way to the
left at "AUTO" so that the
yellow areaisfully visible.
2. For proper exposure under
usual conditions, set the lens
aperture on the camera to the
f-number that appears oppo-
site the yellow "AUTO" area
on the distance scale of the
f
lashgun's
computer dial (e.9.,
f/5.6 with film-speed setting
of ASA 1OO
or DIN 21).
3. With the flash-ready lamp
glowing. release the camera
shutter.
The flashgun willvary
the flash duration between
1/2,OOO and 1/40,OOOsec.for
proper exposure at flash-to-
subject distancesfrom 7O cen-
timeters 12 tt. 4 in.) to 4.5
meters (approx. 15 ft.). Nor-
mal subjects closer than this
will be overexposed and those
farther away underexposed
with the aperture set as in 2
above. However, satisfactory
exposure for subjects some-
what beyond 4.5m can be ob-
tained by opening the camera
aperture to the f-number that
results by dividing the maxi-
mum guide number (25 for
meters, 82 for feet) by the
f lash-to-subject distance with
unit on either auto or manual
mode.
11
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12
MANUAL OPERATIOT\
1. Make sure that the auto/man-
ual switch isall the way to the
right at "M."
2. For proper exposure under
usual conditions, set the lens
aperture on the camera to the
f-number that appears oppo-
site the flash-to-subject dis-
tance on the comPUter dial of
the f
lashgun (e.9.,
between f /2
and f
/2.8 for 1Om or 33 ft.,
about t/8 for 3m or 10 ft.,
f
/16 f
or 1.5m or 5 ft., etc.,at
ASA 1OO or D
lN 21
).
3. With the flash-readY lamP
glowing, release the camera
shutter. Flash duration re-
mains fixed at 1/2,OOO
sec.
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RECYCLING
With fresh batteries, the monitor
lamp should come on to indicate
recycling with in about 6 sec.
with alkaline-manganese batter-
ies or 7 sec. with sealed carbon-
zinc batteries. Do not attempt to
take flash pictures when the
monitor lamp is
not glowing.
lf the f
lash
is
to be fired immedi-
ately after the monitor lamp
comes on with fresh batteries
and when recycling time is long
with older batteries, the maxi-
mum flash-to-subject distance for
normal auto operation should be
considered
to be 3m (1O
ft.). In
manual operation in this case,
the lens should be opened one
half to one stop more than the
aperture indicated (e.9., set at
t/4 or between f/4 and t/5.6
rather than f/5.6).
When the monitor lamp fails to
light within a reasonable
period
of time, say 30 seconds, with the
power switch on, replace
all f
our
batteries with fresh ones at the
same ttme.
OPEN FLASH
Non-synchronized "open-f lash',
pictures can be made by discon-
necting the camera and flashgun
and using them separately. ln
this case the flash is triggered by
push
ing the open-f lash/test but-
ton. Since flash duration is still
controlled by the sensor
in auto-
matic operation and remains fix-
ed at maximum power on manu-
al, exposure produced will be as
indicated in those respective sec-
tion s.
13
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14 NOTE:
For dark subjects or in poor
reflecting cond itio ns (such as
outdoors at night or in dark
surroundings indoors). it is gen-
erally recommended that the
lens be closed down a half stop
to one stop more than indicated
by the computer dial in auto
operation or opened a half stop
to one stop more than indicated
by the dial on manual mode,
though individual
conditions will
determine the exact setting in
either mode.
FILL.tN OR SYNCHRO-
DAYLIGHT FLASH
Though primarily intended for
use as the sole or main light
source in flash pictures, the
Auto Electrof lash 25 can be
used to balance or fill in shad-
ows with other bright light
sources such as daylight under
appropriate conditions. Suitable
ones to start with on either auto
or manual mode are those in
which ambient and f lash indica-
tions call for the same exposure
settings. Then the ind icated
shutter speed is used, but the
lens is closed down one half to
one stop from that ind icated
(e.9., for 1/60 sec. at between
I/4 and f/5.6, shutter is left at
1/60 but the lens is set at f/5.6
or between f/5.6 and f/8.) From
th
is starting point, settings can
be further adjusted toward ob-
taining effects desired u
nder var-
ious conditions.
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SPECIFICATIONS
Type:
Guide number:
Auto working range:
Flash
duration:
Sensor
angle of
acceptance:
Power source:
N
umber of flashes
per set of batteries:
Recycling
time:
Color temperature:
Coverage:
Sync. contacts:
Size
and weight:
Clip-on automatic/manual electronic flash unit
f
or cord less/corded use
Up to 25 tor calculations in meters at ASA 1OO,
41 in feet at ASA 25, or 18 for meters
at DIN 18
O.7 to 4.5m (2'4" to 14'9") (aperture f
/5.6 at
film speed
ASA 1OO)
1/40,OOO to 1/2,OOO sec. in auto operation,
1/2,OOO
in manual (non-automatic) operation
Approx. 20
DC only from four 1.5v AA (penlight)-size
alka-
line-manganese
or sealedcarbon-zinc cells
Approx. 21O with alkaline cells, 7O with sealed
carbon-zinc cells
Approx.6 sec. with fresh alkaline-manganese
cells.
Approx. 7 sec.
with fresh sealed
carbon-zinc
cells
Balancedfor daylight-type color fitm
60" horizontally and 45o vertically (suff
icient for
wideangle lenses
down to 35mm focal length on
full-frame 35mm cameras)
Direct contacts for hot shoe, jack for attaching
separate
sync. cord that isincluded with unit
55 x 1O5 x 61mm (2-3/'t6 x 4-1
/B x 2-3/8 in.l
not including attaching bracket; 155g (S-7
/16
oz.) without batteries
15
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16
CARE AND STORAGE
o Remove batteries whenever
the flashgun is not to be used
for more than a week.
o Store the unit in a cool, dry
place away from dust, chemi-
cals, or corrosive vapors.
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