Z-240 Main
Functions
The Z-240
is
designed and manufactured
to
be
a high perfo
rm
ance, multi-function
underwater strobe with features such as "S-TTL Auto
",
"wireless connection"
capability without using a fiber optics, high-intensity power LED underwater light
providing 1801umen/20° coxerage, "Manual + TTL Auto" mode and several others
explained in summary below.
"S-TTL
Auto
"
Flash
Mode
By optically connecting to pre-flash type digital cameras (with
an
"Optical D
Cable" or by "
wi
reless co
nn
ection"), the Z-240 enables
to
shoot
in
"TTL Auto
exposure" supporting a wide range of cameras, regardless of make or
model. The Z-240 carries more sensitive slave sensor comparing
to
existing models enabling highly accurate exposure control.
Slave Strobe Function("
S-TTL
Auto"I "ExternalAuto" Flash Modes)
When connected
to
another (master) strobe, the Z-240 flashes
in
synch with
the master strobe. Connecting to compact digital camera is also employ
slave system to camera's built-in strobe (master strobe).
When connecting to pre-flash type camera, the Z-240 itself automa
ti
ca
ll
y
adjusts for proper exposure
in
IS-TTL AutoJ mode. Other slave flash
modes are !External AutoJ mode, which does not need a strobe control
signal from
th
e camera, and IManualJ mode with 13 adjustable steps of
flash output control.
Wireless Slave
Function
(wireless "S-TTL
Auto
" Flash Mode)
The Z-240 has ultra sensitive slave sensor
to
receive master strobe flash
light without "fiber optics" to support handy wireless slave strobe set-up with
compatible strobe arm. Under wireless circumstance with pre-flash type
digital camera, either of IS-TTL AutoJmode where strobe controls exposure
as like ''TTL Auto
",
I External AutoJ mode where the Z-240 controls flash
output by itself without camera's control orlManualJmode
to
provide 13 step
manual flash adjustment,
is
usable
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Inc
Flash
Function
("TTL
Auto
" I "
External
Auto"
Flash
Modes)
When
ca
mera shutter
is
released the Z-240 flashes proper amount of light
in
synch with the camera system. Nikonos 5 pin type synch connector enables
"electrical cable
11
connection in addition to existing "optical connection".
When using with compatible camera systems the Z-240 operates
in
"Nikonos"
type ITTLAutoJmode common
in
conventional film camera systems, !Manual
+ TTLAutoJ mode combined system of advantages ofTTLAuto and Manual
mode, !External AutoJ mode, which does not need a strobe control signal
from the camera and IManualJ mode with 13 adjustable steps of flash output
contro
l.
Shutter
Linked
Auto-Off
Focus
Light'
The Focus Light has two main functions. First it shines light on the subject,
in
creasing reflectivity/contrast so both Manual and Auto Focusing are easier.
Also, it helps aim the strobe's beam axis
on
or
near the subject.
Th
e Focus
Light uses Cree high-intensity power LED (XR-E "Q5") which
is
useable as
independent diving light providing
1801m
and 20° coverage. Upon activating
the Focus Light Switch, the Focus
Li
ght
wi
ll
tu
rn
on, and upon sensing the
camera's internal strobe flash,
wi
ll
automatica
ll
y turn off so no light from the
Focus Light
is
recorded
in
the image2. Also the Focus Light can
be
set to turn
off automatically
in
about eight seconds if the Focus Light Switch is not pressed
again.
Clear
Photo
Svstem
Compatible
"Clear Photo System" allows the external strobe (Z-240) to
be
more effectively
used as a Slave Strobe, and enables cleaner, higher quality images by
reducing
th
e amount of backscatter3 caused by light coming from the camera's
built-in stro
be
illuminating suspended particles
in
front of the lens.
Clear Photo System was designed into the Z-240. "Clear Photo Film
",
included with INON "Optical D Cable/Cap Set" available for various cameras I
housing systems, enables Z-240 utilize Clear Photo System by connecting
IN
ON
Optical D Cable/Cap Set4.
1
Fo
r act
ua
l operation method, refer to r
3.
Us
in
g the Z-240 - Focus Light Switch use (P.61)J .
2 When shooti
ng
with shutter speeds slower than 0.5 seconds, the Focus Light
ma
y be recorded
in
the
image. Also, with some camera systems the Focus Light may be
re
corded in the image.
~ee
r3.
U
si
ng
th
e Z-240 -
Fo
cus Light Sw
it
ch u
se
(P.61)Jandr 1. About This Pro
du
ct -
It
ems to
co
nfirm before
us
ing
Z-240 -Confirming usable functions (P.23)J for reference.
3 Small
pa
rticles
su
spended
in
water be
tw
een lens and subject. which if illuminated by strobe, re
fl
ect
into
th
e lens and appear as
wh
ite specs or "snow".
4 Compatible only
wi
th
~
O
p
ti
c
al
D Ca
bl
e Connectionn . Not usable for
~
Wir
e
l
ess
Co
nn
ec
ti
onn .
