Canon Speedlite Transmitter ST-E2 - Manual (Page 10)

Basic Wireless Autoflash
Taking the picture and
flash confirmation
W h e n y o u p r e s s t h e s h u t t e r b u t -
t o n
a s i g n a l
i s t r a n s m i t t e d t o t h e s l a v e , t h e n
t h e s l a v e f i r e s a p r e f l a s h a n d t h e n
t h e m a i n f l a s h w h e n t h e p i c t u r e is
t a k e n .
The subject's flash reading
is obtained with t h e a n d
used to s e t t h e main flash output.
Wireless flash photography is there-
by executed with a n optimum flash
When t h e correct flash exposure is
obtained, t h e
flash confir-
mation lamp lights for about 3
immediately after the flash fires. If
i t does not light, the picture might
be underexposed. In this case, use a
larger a p e r t u r e or place the slave
28
closer to t h e s u b j e c t a n d r e p e a t
steps
to
With the EOS-3, the model-
flash can be fired to see
t h e lighting effects before
i s t a k e n . S e e
page 32.
The slave must be properly
positioned to receive t h e
wireless transmission.
After t h e picture is t a k e n .
the slave's operation result
is displayed on t h e slave's
display panel.
I f t h e s l a v e i s in t h e S E
(Save Energy) mode, press-
ing t h e t e s t t r a n s -
mission button will cancel it.
When you press t h e shutter
button halfway and activate
t h e c a m e r a ' s e x p o s u r e
meter, the ST-E2 cannot be
used to cancel the slave's
mode o r to e x e c u t e a t e s t
transmission. The camera's
exposure m e t e r m u s t t u r n
off (viewfinder's
s e t t i n g d i s p l a y t u r n s off)
before t h e S E mode can be
canceled or a test transmis-
sion executed.
AF-assist beam
U n d e r low-light o r low-contrast
c o n d i t i o n s , t h e A F -
a s s i s t b e a m is e m i t t e d t o a s s i s t
a u t o f o c u s i n g . The A F - a s s i s t
b e a m i s c o m p a t i b l e w i t h t h e
EOS-3's A r e a AF. T h e AF-assist
b e a m ' s effective r a n g e is a b o u t
0.6 m e t e r t o 10 m e t e r s a t t h e
c e n t e r a n d m e t e r t o 5
a l o n g t h e p e r i p h e r y .
The AF-assist
e m i t t e d only while is
attached to the EOS-3. In of
c a m e r a s with a built-in AF-
assist beam emitter, beam will
emitted the camera.
The slave's AF-assist beam is not
(except when flash is
ready).
To prevent overheating, limit
t h e n u m b e r of consecutive
wireless transmissions to 50.
After 50 consecutive wireless
transmissions, allow the ST-EP
to rest for 10 minutes.
COPY