NEEWER Z1 TTL Li-ion Round Head Camera Flash Instruction Manual

Z1 TTL Li-ion Round Head Camera Flash
Instruction Manual

TTL Li-ion Round Head

Copyright

© 2021 Shenzhen Neewer Technology Co., Ltd. All Rights Reserved.
This document is the sole property of Shenzhen Newer Technology Co., Ltd and shall not be, reproduced, transmitted, transcribed, stored inaretrieval sisters or  translated i n any form, by any means, without prior written permission from Shenzhen Newer Technology Co., Ltd . Shenzhen Newer Technology Co., Ltd reserves the  right to change content in this instruction manual a t any time and without prior notice.

Version Control

Foreword
Thank you for your purchase of a Newer® product.
This Z1-C camera flash has been designed with the Canon EOS series cameras i n mind and is compatible with E-TTL II autoflows feature. Simplify your shoots with this E-TTL compatible flash which allows the user too twain the correct flash exposure even in more complex environments with variable lighting levels. This camera  flash features:

• The flash incorporates a round head light reflector design to achieve creative, even and soft light effects. It also features a 2W LED modeling light for fill light photography.
• Maximum flash power of 76Ws, 81 levels of dimming (1/1-1/256)
• Professional lithium battery for an optimal experience. 2600mAh Li-polymer battery with an autonomy of 480 flashes at full power, 1.5 seconds fast recharge.
• Compatible with Canon E-TTL II Supports E-TTL auto flash, which can be used as the master or slave unit of a wireless multi-lamp flash system – making shooting easier and faster.
• Dot-matrix LCD panel Clear display, easy to operate.
• Built-in 2.4GHz wireless transmission Integrated transmitter and receiver with a large radius.
• Comprehensive range of functions for an optimal experience Supports manual frequency flash mode, HSS/second curtain sync/ FEC and other E-TTL II functions.
• Stable output High speed continuous flash and color temperature with good even lighting.
• Updatable Firmware for total compatibility Firmware will be upgraded as the camera is updated.

Precaution

• Always keep this product dry.
• Keep this product out of reach of children.
• Do not disassemble or modify the product.
• Do not subject to any form of physical shock. The product shouldn’t be exposed to fire or an environment where the temperature exceeds 50 degrees.
• Do not fire the flash directly into the eyes which could result in visual impairment.
• Do not use the product near chemicals, flammable gases or other volatile substances which may cause fire or electromagnetic interference.
• Do not use in the rain or in damp conditions.
• Turn off the product immediately, if it appears to be operating abnormally, and try to troubleshoot the likely cause.
•  Failure to comply with the recommendations and warnings listed in the manual will invalidate the warranty.

Package Contents

*Note: Please use the original power adapter for charging. Do not use an adapter with an input voltage greater than 5V, otherwise the charger will be damaged.

Name of components

Flash Body

1. Flash head
2. LED Modeling Lamp(01-10)
3. Wireless Sensor
4. Focus Assist Beam
5. Hotshoe
6. LCD Panel
7. Lithium Battery
8. Battery Eject Button
9. Hotshot Attachment bracket

Name of components
2. Control Panel

1. Flash Menu Button/Lock Button
2. < >Wireless Selection Button
3. Select Dial
4. Set Button
5. ON/OFF Power Switch
6. < >Test Button / Flash Ready Indicator
7. Focus Length Setting
8. <€MODE>Mode Select Button
9. < >Modeling Lamp Setting
10. < +/- >Power Output
11. Function Button1
12. Function Button2
13. Function Button3
14. Function Button4

3. LCD Panel
(1) E-TTL Autoflash

1. The display will only show the settings currently applied.
2. The functions displayed above function buttons 1 to 4, such as < > and <A/B/C/D> will change according to settings’ status.
3. Pressing a button or moving the dial will illuminate the LCD panel.

(4) Wireless Transmission Shooting

4. Different LCD screen displays in three modes
(1) Attached t o the Camera

2.4G Wireless Transmission: As a Transmitter Unit

2.4G Wireless Transmission: Asa Receiver Unit

(4)S1/S2 mode

Battery

Features

1. This flash unit uses Li-ion polymer battery which boasts along service life and can be charged / discharged up to 500 times.
2. Safe and reliable, the built-in circuit protects against overcharge, over discharge, overcurrent , and short circuit.
3. The standard charge time t o fully charge the battery is 3.5 hours using the charger.

2, Caution

1. D o not short circuit.
2. Do not immerse the battery in water.
3. Keep the battery out of reach of children.
4. Do not exceed 24 hours of continuous charging.
5. Store the battery in dry , cool and ventilated environment.
6. Do not place the battery near or infare.
7. Dead batteries should be disposed according t o local regulations.
   If the battery is’ tot be used for some time, please ensure it is charged at least every 3 months,

3. Inserting and Removing the Battery

1. Removing the battery Slide the button in the direction shown t o remove the battery.
2. Inserting the battery
   Insert the lithium battery into the battery compartment in the direction indicated by the battery until the fastener snaps into place.

4, Battery Level Indicator
Make sure the battery is securely inserted in the flash. Check the battery level indication on the LCD panel to see the remaining battery level.

Please recharge the battery as soon as possible (within 10 days). the battery can then be used  or stored for a long period.

Modeling Lamp

Press the Modeling Lamp set button t o activate the modeling lamp mode.
Short press the Set Button t o turn the modeling lamp on /off. After turning the modeling lamp on, turn the select dial t o set the brightness level (10 levels 01~10)

• After setting, press function button 4 to exit.

Mount / Unmount flash

1. Mount the Camera Flash.
Turn the locking ring to the left to fully insert the camera’s hot shoe.

2, Secure the Camera Flash.
Rotate the locking ring to the right until secure.

3. Unmount the Camera Flash.
Press the button and rotate the hotshot locking ring t o the left to loosen.

Power Management

% Use ON/OFF Power Switch to power the flash unit on or off. Please turn off the power if the flash won’t be used for a long period. When setting as a transmitter (master)  flash, the flash will turn the power off automatically after a certain period (approx. 90 seconds) o f inactivity. Pressing the camera shutter halfway or pressing any  flash button will wake up the flash unit. When setting as are ceiler (slave) flash, it will enter sleep mode after a certain period (adjustable, 60 minutes by default) of idle use. Pressing any flash button will reactivate device.
Note:

1. When used off the camera, it is recommended that you customize the function t o disable “automatic power  off”.
2. Receiver Auto Power Off Timer is set to 60 minutes by default. A30 minute timer can also be applied.

Flash Mode: E-TTL Autoflows

This flash has three flash modes: E-TTL, Manual (M), and Multi(Stroboscopic).
I n E-TTL mode, the camera’s metering system detects flash illumination reflected from the subject and automatically adjusts the flash output to balance the exposure of  the subject and background. Flash Exposure compensation ( FEC ) , flash exposure bracketing (FEB), high-speed sync (HSS), second-curtain shutter sync, flash exposure  lock (FEL), aperture preview shadow flash, and Canon camera menu access are supported.

• Press < MODE > Mode Selection Button. The three flash modes will
  display on the LCD panel ina cycle.

1. E-TTL Mode
Press < MODE > Mode Selection Button to enter E-TTL mode.

1. Press the camera release button halfway t o focus. The aperture and effective flash range will be displayed i n the viewfinder.
2. A pre-flash is fired moments before the shutter is released, and the flash receives camera information for the main flash.

2. FEC(Flash Exposure Compensation)
In FEC mode, the flash can adjust flash exposure compensation in 1/3-stop increments between +3 stops. This feature is useful when the TTL system needs to be fine- tuned to accommodate the shooting environment.
Setting flash exposure compensation:

1. Press <+/-> button.

(2) Set the flash exposure compensation amount.

1. Turn the Select Dial to set the amount.
2. 0.3″ indicates 1/3 step, “0.7” indicates 2/3 step.
3. To cancel the flash exposure compensation, set the amount to ” + 0 ” .

Press the set button t o confirm the new settings

3. FEB(Flash Exposure Bracketing)
FEB(Flash surround Exposure) automatically changes the flash output in 1/3rd stops from -3 to +3. When using this function, the camera will record three photos with  different flash outputs (correct exposure, underexposure, and overexposure). This function helps obtain correct exposure which is key when shooting moving objects or  when environmental lighting is more complex.

1. Press function button 2 so that the screen displays the <> icon and the FEB amount will be highlighted on the LCD panel.
2. Set the flash exposure compensation amount.
   Turn the Select Dial to set the FEB amount.
   “0.3” equates to 1/3 step, “0.7” equates to 2/3 step.

Flash Mode: E-TTL Autoflows

(3) Press Set Button again to confirm the setting. The FEC and FEB settings are displayed on the LCD panel.

• FEB will be canceled after three photos are taken.
• For F E B , set the camera drive mode to “single” and ensure the flash is ready before shooting.
• FEB can be used w i t h FEC and FEL
  Note: You can prevent the flash bracketing exposure from being automatically canceled after three shots.

4. FEL : Flash Exposure Lock
FEL can lock the correct flash exposure setting for any part of the scene .
With displayed on the LCD panel, press the camera’ s button.
If the camera does not have the button, press the < * > button.

1. Bring the subject into focus
2. Press the button
3. Aim the center o f the viewfinder at the subject, and then press the button.
4. The camera flash will fire a perflate and the required flash output for the subject i s memorized.
5. “FEL” will show in the viewfinder for 0.5 seconds.
6. Each time the button is pressed, a perflate will be fired and a new flash exposure setting will be locked.

• If the subject i s too far away and underexposure, the icon will flash in the viewfinder. Please approach the subject and try Flash Exposure Lock (FEL) function again.
• Flash exposure lock cannot be set if is not displayed on the LCD.
• Flash exposure lock may not work effectively if the subject is too small.

5. HSS: High Speed Sync
High Speed Sync (FP flash) enables the flash to synchronize with all camera shutter speeds, This is convenient when you want to use aperture priority for fill-flash portraits.

1. Press Function Button 1 <9EQore > so that < EA > displays.
2. Check that < EM] > is displayed in the viewfinder.

• If the shutter speed is set to equal or slower than the camera’s maximum flash sync speed, < EA > will not a pear in the viewfinder.
• With high – speed sync, the faster the shutter speed, the shorter the effective flash range.
• To return to normal flash, press < EygieMl > button again. Then <ER}> will disappear.
• Multi flash mode cannot be set i n high-speed sync mode.
• Over-temperature protection may be activated after 15 consecutive high – speed sync flashes.

6. Second-Curtain Sync
With a slow shutter speed, you can create a trail of light following the subject. The flash fires right before the shutter closes.

Press Function Button 1 SYNC so that [EJ] displays.

Manual Flash
The flash output is adjustable from 1/1 full power t o 1/256th power in 1 / 10th stop increments.
To obtain a correct flash exposure, use a hand-held flash meter to determine the required flash output.

Manual Flash

1. Turn the Select Dial to set the flash output rating.
2. Press Set Button again to confirm the setting.

Press function button 2 to adjust the S1/S2 mode
* S1 Optical control unit setting
In M manual flash mode, the S1 function can be used and the flash unit can function as an optical S2 secondary flash. It will fire synchronously when the main flash fires, the  same effect as that obtained by the use of radio triggers. This helps the photographer create multiple lighting effects.

• S2 Optical control unit setting
  In M manual flash mode, the S2 function can be used and the flash unit can function as an optical S2 secondary flash. In this mode, it will ignore the pre-flash emitted by the  TTL flash and will only fire in response to the second flash from the main unit.
  Note: S1 and S2 optical triggering is only available in M manual flash mode.

Multi: Stroboscopic Flash

The term stroboscopic flash relates to a rapid series of flashes being fired.
It can be used to capture multiple images of a moving subject in a single photograph.
You can set the firing frequency (number of flashes per sec. expressed as Hz), the number of flashes, and the flash output.

1. Press the button so that displays.

2. Set the flash frequency and the number of flashes.
   Press the Function Button 1 to select the number of flashes. Turn the Select Dial to set the value.
   Press the Function Button 2 to select the flash frequency.
   Turn the Select Dial to set the value.

3. Turn the Select Dial to set the flash output. Press SET Button to confirm and all settings will be displayed.

Calculating the Shutter Speed:
During a stroboscopic flash, the shutter remains open until the firing stops. Use the formula below to calculate the shutter speed and set it with the camera.
Number of Flashes / Flash Frequency = Shutter Speed For example, if the number of flashes is 10 and the firing frequency is 5 Hz, the shutter speed should be at least 2 seconds.

• To avoid overheating and deterioration of the flash head, do not use the stroboscopic flash more than 10 times in succession. After 10 times, allow the camera flash to  rest for at least 15 minutes. If you try to use the stroboscopic flash more than 10 times in succession, the flash may stop flashing automatically. This is to protect the flash head. Should this happen, please allow the camera to rest for 15 minutes.
• Stroboscopic flash is most effective with a highly reflective subject against a dark background.
• It is recommended to use a tripod and a remote control.
• A flash output of 1/1 and 1/2 cannot be set for stroboscopic flash mode.
• Stroboscopic flashes can be used with the “buLb” function.
• If the flash count is displayed as –, the flash will fire continuously until the shutter release or the battery is exhausted. The number of flashes will be limited as shown in  the table below.

Maximum number of strobe flashes

Wireless Flash Shooting: Wireless (2.4G) Transmission

• When the camera’ s shooting mode is set to a fully automatic mode or an Image Zone mode, the operations explored in this chapter are not available. Please set the camera’  s shooting mode to P/Tv/Av/M/B (Creative Zone Mode).

• The Z1-C attached to the camera is called the transmitter unit, and a Z1-C that is wirelessly controlled is called the receiver unit.
  Using a flash (transmitter/receiver) with a radio transmission wireless shooting function make it easy to shoot with advanced wireless multiple flash lighting, in the same way  as E-TTL II autoflows shooting The basic relative position and operation range are as shown in the picture. You can then perform wireless E-TTL II autoflows shooting by  setting the transmitter unit to

  . Positioning and Operation Range (Example of wireless flash shooting): Autoflash Shooting with One Receiver Unit
  • Use the supplied mini stand to position the Receiver unit.
  • Perform a test flash and test shot before shooting.
  • The transmission distance might be shorter depending on the conditions such as the positioning of the Receiver units, the surrounding environment and weather  conditions.

Wireless Multiple Flash Shooting
You can split the slave unit into two or three groups and shoot E-TTL II
Auto Flash while changing the flash ratio (focus). In addition, each flash group (up to four groups) can be set and shot with different flash modes.
Auto flash shooting with two slave groups.

Auto flash Shooting with three slave groups

Shooting with a Different Flash Mode set for Each Group

• The flash mode Settings shown above are only used as examples.
  1. Wireless Settings
  You can switch between normal flash and wireless flash. For normal flash, be sure to set wireless Settings to “off”.
  Transmitter (Master) Unit Setting

Press < > button so that < > displays on the LCD panel.
Receiver (Slave) Unit Setting Press < > button so that < > and< > displays on the LCD panel.

2. Turn off Master unit flash
When the Transmitter (master} unit is set to OFF, only the Receiver (slave) units will fire a flash.

1. Press

   Button to enter custom Settings.

2. Set Transmitter to ON/OFF to control the On/Off of the Transmitter unit.
   Even if the m aster unit is disabled, it will still fire a perflate in order to transmit wireless signals.

3. Setting the communication channel
If there i s more than one wireless flash system nearby, you can change the communication channel to prevent signal interference. Ensure that the channel of the transmitter and receiver units are matching,

1. Press Button t o enter CH custom settings.
2. In Custom CH settings screen, turn the Select Dial t o choose a channel from 1 t o 32, After setting, press function button 4 to exit
3. Press the SET button t o confirm.

4. Wireless ID Settings
In addition to changing the wireless communication channel to avoid signal interference, you can also change the wireless ID to prevent interference. Set the channel and the  wireless ID of the transmitter unit and the receiver unit to the same values. Go to C.Fn ID and choose wireless ID from 01 to 99. Select OFF to disable the wireless ID.

* After setting, press function button 4 to exit.

5. Scan for a free, unused channel
To avoid the issue of interference by using the same channel(s) already in use by others, use this function: enter the C.Fn settings and find the SCAN option. When setting it  to START, it will scan from 1% to 100%. The 8 spare channels will be displayed after the scan is completed.

• After setting, press function button 4 to exit.

6. ETTL: Automatic wireless flash photography
Note: The transmitter (master) unit and the receiver (slave) unit must have the same wireless ID, channel and group before the flashes can be fired wirelessly.
Using Automatic Wireless Flash with a Single Receiver Unit

(Press the function button 1/2/3/4(corresponding A/B/C/D) to independently adjust to TTL mode.)

• Press function button 2(corresponding to B) to select group B, and then press function button 2 again to select TTL/M/– option (turn the dial to adjust power and set  flash output power), as shown in the picture.

  1. Transmitter Unit Setting

  2. Attach a camera Z1-C flash on the camera and set it as the transmitter unit. Set it to ON to flash.(Page 15)

  3. A signal transmitter can also be used as the master control unit. The transmitter can control the ZOOM value of the Z1-C, but the ZOOM must be set to auto mode.

  4. Receiver Unit Setting Mount the Z1-C camera flash as the wireless Receiver Unit.

  5. Check the communication channel.
     Set the channel of the Transmitter unit and Receiver unit to the same values. Set the Transmitter unit channel(page 15). The Receiver unit can be set to press the function button 3/4(corresponding Gr/CH) to adjust the group channel.

  6. Position the camera and flashes.
     Position the camera and flashes as indicated by the picture. (Page 13)

  7. Check if the flash is ready.
     Check that the Transmitter flash ready indicator is lit.
     When the Receiver flash ready indicator is ready, the AF-assist beam lighting area will flash at 1 second intervals.
     Check the flash operation.
     Press the Transmitter unit’ s Test Button:
     The Receiver unit should then flash. If it doesn’t, check the receiver is placed within the operating range.

Using Automatic Wireless Flash with Multiple Receiver (slave) Units

When a larger flash output is required, you can increase the number of slave units and flash them as a single flash.
To add receiver (slave) units, use the same steps as setting “automatic wireless flash with a single Receiver unit”. Any flash group can be set (A/B/C/D/E).
When the number of slave units is increased or the master flash is set to ON, automatic control ensures that all flashes fire at the same flash output so that the total flash  output meets the standard exposure.

• Press the depth-of-field preview button on the camera to fires modeling flash.
• If the auto power off of the slave unit has kicked in, press the test button on the Master unit t o trigger a flash button enables the slave unit. Please note that the  flash cannot be tested during the camera’s metering time. % It is possible to modify the amount of time before the slave unit automatically powers off.
•  It is also possible t o set so that the autofocus assist transmitter does not flash when the slave unit has finished powering up.

Using a fully automatic wireless flash
The flash exposure compensation (FEC) and other settings set on the master unit are also set automatically in the slave unit. Operation of the slave unit is not required. The  following settings can be used for shooting with no line flash in the same way as for normal flash shooting.

1. Flash Exposure Compensation
2. Manual Flash
3. Flash Exposure Lock
4. Stroboscopic Flash

About Transmitter Unit
Two or more master units can be used. By configuring multiple cameras with master units, you can change the cameras used for shooting while maintaining the same lighting (slave units).

7. M: Manual Wireless Flash Shooting
Shooting with manual flash with no line (multi-flash) allows you to set different flash outputs for each slave unit (flash group) for shooting. All parameters need to be set on the master control unit.

1. Press the function button 1/2/3/4 (corresponding A/B/C/D) to adjust t o M mode.
2. To set the flash output Press the function button 1/2/3/4 < a / B / C / D > , Turn the Select Dial t o set the flash output of the groups. Press the Set Button to  confirm.
3. Taking pictures Each group fired at the set flash ratio.

Setting Flash Mode
You can directly operate the Receiver unit to manually set the manual flash or stroboscopic flash.

1. Setting the Receiver unit.
2. Setting flash mode to .
3. Press button s o that displays.
4. Set the manual flash output.

8. Multi: Wireless Flash Shooting with Manual Flash

To set the strobe mode.
In the main control screen mode, press the mode selection button to display .
(2) Set the strobe flash setting in the main control screen mode.

In receiver unit mode, press the  button to display .

Troubleshooting: 2.4G wireless flash misfiring

1. Interference of the 2.4¢ signal resulting from external factors (such as a wireless hub, 2.4G Wi-Fi routing, Bluetooth equipment, etc.)
   Please adjust the channel CH setting of the transmitter(+10 is recommended) to find a channel without interference, or turn off other 2.4G devices in close proximity whilst working.

2.  Please ensure that the flash is fully recycled, the flash ready indicator is on and that the overheat protection feature hasn’t been triggered.
   Please lower the flash setting by changing to manual mode (M) If the device is in TTL mode, you need to fire a perflate)

3. Please check whether the flash detector and the receiving device are running low on power
   Please replace the batteries (1.5V disposable alkaline batteries are recommended for the flash receiver battery) Other Applications

Other Applications

1. Sync Triggering
   The Sync Cord Jack is a ®2.5mm connector. Insert a trigger plug here and the flash will be fired in sync with the camera shutter.

2. Modeling Flash
   If the camera has a depth-of-field preview button, pressing the button will trigger a one-second continuous flash, a feature known as a ‘modeling flash’.
   You can see the lighting effect and lighting balance on the subject with the modeling flash, whether you are shooting with no lines or with a normal flash.

• Please do not fire the modeling flash for more than 10 consecutive times. If you fire the modeling flash 10 consecutive times, allow at least 10 minutes’ break for the  camera flash to prevent overheating or damage to the flash head.
• EOS 300 and Model B cameras do not support the modeling flash feature. 3. Auto Focus Assist Beam
  In low-brightness or low-contrast shooting situations, the flash’s built-in autofocus assist lamp turns on to make autofocusing easier. When focusing is difficult, the red  autofocus assist light comes on.
  To turn off the autofocus function, set “AF” to “OFF” in Cefni.
• If the user finds that the assisted focus light is not on when using it, it is because the camera is already accurately focused.

4, Bounce Flash
By pointing the flash head toward wall or ceiling, the flash will bounce off the surface before illuminating the subject. This can soften shadows behind the subject for a  more natural-looking shot. This is commonly known as a ‘bounce flash’.
Position the flash head to set the bounce direction.

• If the wall or ceiling is too far away, the bounced flash might be too weak and result in underexposure
• The wall or ceiling should be a plain, white color for high reflectance.
  If the bounce surface isn’t white it will result in “off color” photos, 5. ZOOM: Set the flash coverage
  The flash coverage can be set automatically or manually. It can be set to match the lens focal length from 28mm to 105mm. In auto zoom, the focal length changes with the  camera’s zoom lens to provide the best flash effect.

In Manual Zoom mode, press the button.
Turn the Select Dial to change the flash coverage.
if Elis displayed, the flash coverage will be set automatically.

• If you set the flash coverage manually, make sure it covers the lens focal length so that the picture will not have a dark periphery.

If the battery power is low, will flash on the LCD panel. Please replace the battery as soon as possible.

Cefni: Setting Custom Functions

Use the Customize function to complete settings according to the following chart.

1. Press MENU Button until Cefni menu displays. The “Verx.x” in the lower-right corner refers t o the software version.
2. Select the Custom Function No. by turning the selector dial.
3. Change the Setting.
4. Press the Settings button to customize the function number.
5. Turn the Select Dial t o set the desired number. Pressing the Set Button will confirm the settings.
6. After you set the Custom Function and press button, the camera will be ready to shoot.

Restore factory settings

1. Long press the two buttons at the same time.
2. RESET” will appear on the screen to indicate that the factory settings have been restored.

Control using the Camera’s Menu Screen
Mount the flash directly onto the Canon EOS camera to control the flash using the camera’s menu screen. Please refer to the camera instructions for details.

1. Setting Camera Flash Functions
   The following flash functions are can be set according t o different flash modes.

2. Flash mode

3. Shutter sync

4. FEB

5. FEC

6. Flash firing

7. Clear camera flash settings

8. Custom Functions of Camera Flash
   C.Fn-00, C.Fn-01, C.Fn-03, C.Fn-08, C.Fn-10, C.Fn-20, C.Fn-22, 7 i n total.
   Clear All Flash Custom Functions

Screen view taken from the EOS-1D Mark Ill.

Control using the Camera’s Menu Screen

• If flash exposure compensation has already been set using the camera flash, flash exposure compensation cannot be set with the camera. To set it with the camera, the  camera flash’s flash exposure compensation must be set t o “0”.
• If any Flash Custom Functions and flash settings, other than flash exposure compensation, have been set by both the camera and the flash, the last applied settings will be used.

Protection Function

Function

1. Over-Temperature Protection
2. To prevent the flash head from deteriorating and overheating, it is recommended not to fire more than 30 continuous flashes in fast succession at 1/1 full power.  After 30 continuous flashes, pause the use of the flash for at least 10 minutes.
3. If you fire more than 30 continuous flashes and then fire more flashes i n short intervals, the inner over-teem prelature protection function may be activated.  The recycle ling time will be longer (over 10s). If this occurs, the use o f the device should be paused for at least 10 minutes for the flash unit to operate as  normal.

Number of flashes that will activate over-temperature protection:

1000
1/128(+0.3,+0.7)

Number of flashes that will activate over-temperature protection in high-speed sync triggering mode:

30
1/8(00.3,00.7)
1/16(40.3,00.7)|
40
1/32(00.3,00.7)
1/64(+0.3,+0.7)|
50
1/128(00.3,00.7)

2. Other Safety Functions

• The system provides real – time protection to secure the device and your safety. The following lists prompts for your reference:

cannot fire. Please restart the flash  unit. If the problem still exists, please send this product to a maintenance center.
E2| The system beomes overheated. Please stop using the flash for a period of 10 minutes.
E3| The voltage on two outlets of the flash tube is too high. Please send this product to a maintenance center.

Technical Data

Auto zoom (Flash coverage set automatically
to match the lens focal length and image size)
Manual zoom
Swinging/tilting flash head (bounce flash):
0 to 330° horizontally and -7° to 120° vertically
Flash Duration| 1/180 to 1/20000 seconds
Exposure Control
Exposure control
system| E-TTL II autoflash and manual flash
Flash exposure
compensation (FEC)| Manual. FEB: ±3 stops in 1/3 stop increments
(Manual FEC and FEB can be combined.)
Flash exposure
lock (FEL)| Use button or< . > button
Sync mode| High-speed sync (up to 1/8000 seconds),
first-curtain sync, and second-curtain sync
Multi flash| Autonomy(up to 100 times, 199Hz)
Wireless flash (radio 2.4G transmission)
Wireless flash function| Transmitter, Receiver, Off
Transmitter groups| A, B, C, D
Controllable Receiver
groups| A, B, C, D, E (E group can be controlled by Q series
flash trigger available on Neewer.com)
Transmission range
(approx.)| 100m
Channels| 32 Groups:01-32
ID| 01-99
Modeling flash| Fired with camera’ s depth-of-field preview button
Auto Focus Assist Beam
Effective range (approx.)  Center: 0.6-10m / Periphery: 0.6-5m
LED Modeling Lamp
Power| 2W
Color Temperature| 3300K±200K
Power source

Built-in Li-ion battery| 7.2V/2600mAh Li-ion battery
Recycle time| Approx 1.5 seconds. Red LED indicator will light up when the flash is ready.
Number of flash in full power| Approx. 480
Energy-saving|  Auto Pow Power o fee r approx.   90 se condos idle )
Sync Triggering Mode| Hotshoe, 2.5mm sync line
Dimensions
Volume| 7693197 mm
Net weight without battery| 420g
Weight with battery| 530g

Troubleshooting

If you experience a problem with the device, please refer to this Troubleshooting Guide.

1. The Camera Flash does not fire
   The camera flash is not attached securely to the camera.
   Attach the hot shoe base mount of the flash securely to the camera.
   The electrical contacts of the camera flash and camera are dirty.
   Clean the contacts.

   < >or< >isnot displayed in the viewfinder of camera. Wait until the flash is fully recycled and the flash ready indicator lights up. lf the flash ready indicator lights up, but< .>or< >is not displayed in the view finder, check whether this flash unit is securely attached to the camera Hotshoe. lf the flash ready indicator does not light up after a long period of time, check whether the battery power is sufficient. If the battery is low (low battery voltage icon  flashes on the flash screen), please replace the battery immediately.

2. Auto power off
   After 90 seconds of idle operation, auto power off will have activated if the flash is set as Transmitter (Master).
   Press the shutter button halfway or press any flash button to wake up.
   After 60 minutes (or 30 minutes) of idle operation, the flash unit will enter sleep mode if it is set as Receiver (Slave).
   Press any flash button to wake up.

3. Auto zoom does not work.
   The camera flash is not attached securely to the camera.
   Attach the camera flash’s mounting base to the camera.
   The flash exposure is underexposed or overexposed.
   There was a highly reflective object (e.g. glass window) in the picture.
   Use FE lock (FEL).
   You used high-speed sync.
   With high-speed sync, the effective flash range will be shorter. Make sure the subject is within the effective flash range displayed.
   Use Manual Flash mode.
   Set the flash mode to ETTL or modify the flash output.

4. Photos have dark corners or only parts of the target subject are illuminated.
   The focal length of lens exceeds the flash coverage.
   Check the focal length that has been set. This flash unit has the flash coverage between 28 and 105mm, which fits medium-format cameras.

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