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NEEWER Speedlite 750II User Manual

NEEWER Speedlite 750II
29 pages
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1.Warning
I
1. Do
not
use
the
unit
in
the
presence
of
flammable
or
explosive
gas.
2.
When
the
speed
lite is
dropped
or
damaged.do
not
touch
any
exposured
inner
metal
parts
3.
Stop
the
speed
lite
and
take
out
the
battery
if
there's
heat,
smoke
or
smell
of
burning
to
av-
id
catching
fire.
4.
If
the
corrosive
liquid
leaked
from
the
battery
and
get
in
your
eyes.please
clean
your
eyes
with
clear
water
and
consult
your
doctor.
5.
The
speed
lite
should
not
be
dabbled
in water, rain,
sweat
or
moisture,
to
avoid
catching
fire
or
causing
electric
shock.
•
6. Do
not
use
the
speedlite
to
photo
the
people
who
need
concentrate
on
his
work,
or
may
cause
accident.
7. Do
not
use
the
speedlite
to
photo
people's
eyes
nearly,
or
may
damage
their
retinal
of
their
eyes.Do
not
use
the
speed
lite
to an
infant
within
1 meter.
8.
It's
forbidden
to
use
activity
reaent
such
as
diluent
or
benzene
to
clean
the
components.
Never
store
the
components
in
somewhere
there
are
camphor
and
benzene.or
the
plastic
package
would
be
damaged
and
catch
fire
or
electric
shock.
9. Do
not
leave
the
small
accessories
to
somewhere
the
children
can
reach.so
as
to
avoid
the
children
swallow
them.
If
it
happened.please
consult
the
doctor
at
once.
10. Do
not
attempt
to
disassemble
or
repair
the
components
of
the
flash.to
avoid
catching
fire
or
causing
electric
shock.
11.
Please
use
the
standard
size(AA)
or
other
ordinary
rechargeable
batteries.Make
sure
to
place
the
positive
and
negative
of
the
batteries
correctly.
12.
To
prevent
overheating
the
flash
head
and
shorten
the
operating
life,do
not
flash
contin-
uously
for
more
than
twenty
times
at
the
(1
/1)
largest
setting.
-29-

Table of Contents

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NEEWER Speedlite 750II Specifications

General IconGeneral
Zoom Range24-105mm
Power Source4x AA batteries
Vertical Rotation Angle-7 to 90 degrees
Tilt Angle-7 to 90 degrees
Flash ModesTTL, M, Multi
Recycle TimeApprox. 3s
Color Temperature5600K
Wireless FunctionSlave function
Horizontal Rotation Angle0 to 270 degrees
Flash Duration1/200s - 1/20000s
WeightApprox. 385g (without batteries)
Power Levels1/1 to 1/128
Swivel Angle270 degrees

Summary

1. Warning

General Safety Precautions

Avoid flammable gas, water, and use correct cleaning agents.

Handling & Usage Safety

Handle dropped units, avoid eye exposure, keep away from children, use correct batteries.

4. Installation Guide

Battery Installation Procedure

Step-by-step guide for opening, inserting, and closing the battery compartment.

Mounting Speedlite on Camera

Instructions for attaching the speedlite to the camera's hot shoe securely.

5. Basic Functions

Charging Indicator Status Meanings

Turning On & Charging

Steps to power on the speedlite and understand the charging indicator.

Turning Off the Speedlite

Procedure for powering down the speedlite using the switch.

Adjusting TTL Exposure Compensation

How to increase or decrease exposure compensation in TTL mode.

Manual (M) Mode Settings

Stroboflash Mode Overview

S1/S2 Wireless Trigger Modes

Speedlite Test Function

How to use the PILOT button to test the flash output.

TTL Mode Operation Guide

Using the speedlite in TTL mode for automatic exposure control.

TTL Mode Usage Steps

7. Technical Specifications

Performance & Flash Modes

Key performance metrics like circuit design, guide number, and flash modes.

Power, Battery & Recycle Specs

Physical & Interface Details

Additional Feature List

8. Troubleshooting & Solutions

Outdoor Usage Problem Solving

Solutions for outdoor use issues like direct sunlight and wind.

Battery Installation Troubleshooting

Diagnosing issues when the flash won't turn on after installing batteries.

Exposure & Vignetting Fixes

Addressing under/over exposure and vignetting problems.

Abnormal Operation & Battery Issues

Troubleshooting abnormal operation and function failures, including battery checks.