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Lencarta SmartFlash 4 300Ws Studio Flash

Lencarta SmartFlash 4 300Ws Studio Flash

  • £129.00
  • £99.00

  • Ex Tax: £82.50
- OR -

  • Minimum Power 9Ws
  • Maximum Power: 300Ws
  • Adjustment range: 5 stops (full power to 1/32nd power)
  • Guide No. 160 (ft) @100 ISO
  • Modelling lamp: 150W Halostar
  • Modelling lamp adjustment: Infinite, from off to full power and anywhere between
  • Modelling lamp dims whilst recycling
  • Sync socket: Traditional sync socket for use with any radio trigger or PC cable, if required
  • USB socket: For use with remote control/radio trigger
  • Slave cell: Switchable on/off, located at top rear of unit
  • Accessory fitting: Standard S fit
  • Stand fitting: Standard 16mm / 5/8th inch fitting
  • Power adjustment: Via control knob or Wavesync Commander remote control
  • Modelling lamp adjustment: Via control panel
  • Modelling lamp on/off: Via button or remote control
  • Slave cell: Via button or remote control
  • Open flash/test: Via button or remote control
  • Cooling: built in fan
  • Overheat protection in case of fan failure: Yes
  • Tilt adjustment: Adjustable locking lever
  • Umbrella fitting: Standard 8mm, with locking fitting

Colour temperature:
Setting 1 = 5090K
Setting 2 = 4915K
Setting 3 = 4915K
Setting 4 = 5000K

Therefore, total possible variation from different flash heads set to different power levels cannot exceed 4000 K,which is insignificant.
Variation between flashes at any given power setting is too small to measure.

Power adjustment is in 1/10th stop increments, and can be adjusted both by means of the adjustment dial and via the Wavesync Commander.


The SmartFlash 4 has a built in slave cell, located at the rear top, where it reacts to a flash from any other flash head or flashgun, and fires the flash if required.

The Slave Cell can be set to either S1 or S2, or can be switched off if required.

When set to S1, the flash will fire in response to every flash that it sees

When set to S2, the flash will ignore a pre-flash, which typically occurs when using a built in camera flashgun or a hotshoe flashgun that fires a pre-flash, for example when the flashgun is using an intelligent metering system.


The Flash Tube has an expected lifespan of 100,000 flashes and replacements simply plug in, there is no need to return the unit to us for a replacement flash tube.


The SmartFlash 4 accepts a standard Edison Screw (E27) replacement modelling lamp, and its 150 watts of power is ideal for all types of studio photography.


The Swivel/Tilt adjustment is simple and positive, and allows the head to be fully tilted.


The SmartFlash 4 accepts all S-fit accessories and light shapers, and the accessory release is made from steel, it is located at the side of the flash head.


The Stand mount accepts the standard 16mm / 5/8" fitting, used by all lighting stands.



What's In The Box?

  • 1x SmartFlash 4
  • 1x Protective Head Cap
  • 1x Mains Power Lead (Either UK or EU dependent on location)
  • 1x 7" Standard Reflector
  • 1x 150W Modelling Lamp
  • 2x Spare fuses

30 Day Money Back Guarantee

If you decide you want to return your product, we have your back. All we ask is that you contact us first, and return the item back to us in the condition that you received it.

We ask that you contact us first so we can provide you with an RMA number. This allows us to process your return much quicker.


T&Cs Apply. Please see our Returns Policy for details.


Lencarta SmartFlash 4 Studio Flash Head

The enhanced design of the SmartFlash range of studio flash heads, the Lencarta SmartFlash 4 is the perfect addition to any studio of any size. Thanks to it's robust, compact and lightweight body the SmartFlash 4 can easily be packed away or stored within most equipment cases when not in use. The Smart Flash 4 is ideal for photographers starting out in flash as well as seasoned veterans due to it's easy to use interface and plug-and-play like set up. With 300Ws of power, the SmartFlash 4 is perfect for studio photography, and with the S-fit bayonet mount you can use the majority of light shapers on the market. The SmartFlash 4 flash head strobe has been designed to be the ultimate affordable studio workhorse, capable of many different types of photography - ideal for portraits, product, pet, newborn, wedding and corporate photography.


Who is this perfect for?

Ideal for beginners or seasoned photography veterans looking for a strong and powerful key or additional piece of lighting equipment that can bring depth, ease of use and quality to ones work.

Who is this not perfect for?

Photographers who are looking for outdoor portable battery powered strobes or the use of HSS/TTL advanced features.

Key Points

Perfect for people who:

  • Are needing an affordable key light.
  • Starting out in photography and need an easy to use flash
  • Want a flash that can last a long time, supported by a long warranty

Not Perfect for people who:

  • Need a portable outdoor flash strobe
  • Looking to use HSS/TTL advanced features

The Main Features

Built In 2.4Ghz Receiving System

The SmartFlash IV's Built in 2.4Ghz receiver will allow you to use the smartflash 4 directly with any Godox or Lencarta triggering system running from a 2.4Ghz frequency, This includes the popular Godox Xpro, X2T and X1T models of transmitters.

300Ws Of Pure Studio Power

With a power ranging from 1/32 - 1/1 steps with 9.375Ws being the lowest and 300Ws being the highest, you are in full control of the exact amount of power you require to achieve that shot.

150W Halostar Modelling Lamp

The SmartFlash 4 is supplied with a 150W modelling lamp. The power of the modelling lamp is fully adjustable in 10 simple steps. The modelling lamp also dims while recycling, so you'll have a visual confirmation that it's ready to fire again even if you've switched off the ready beep.

Bowens S-Fit Attachment Ring

The head of the Smartflash 4 comes with a built in Bowens S-fit modifier attachment ring, allowing you to attach a large range of modifiers and light shapers directly onto your SmartFlash IV.

Precise Contrast Output Display

The digital control knob adjusts the power setting and displays it on the LCD control panel. This allows you to precisely adjust the power settings exactly to your required needs.

Lightweight and Compact

With the head cap fitted, The SmartFlash 4 is just 35cm long, 13.2cm diameter, and weighs in at just 1.56kg. This is ideal for a home studio or even transporting to indoor locations.

Internal Heat Protection

With a built-in fan and internal heat protection, the SmartFlash IV keeps your mind free from worry. Before any damage is done to the unit, it will stop itself firing and instantly become available again due to it's high efficiency built-in fan.

3 Years Lencarta Warranty

Designed in the UK, the SmartFlash IV is a well thought out flash for photographers by photographers. We back our product by offering a 3 year warranty, knowing that you will get a quality product.



Lencarta In House Repair Centre

At Lencarta, we know how important it is to provide the best after care and customer service. That is why we are proud to boast our very own in-house UK repair centre that is available to anyone needing a repair. FeiyuTech products bought from us come with a 2 year warranty included! Find out more here.

Flash head
Guide No. (feet) 318
Guide No. (metres) 97
f/ with standard reflector @ 10' f/31.8
f/ with 60 x 60cm softbox @ 10' f/16.2
f/ with150cm softbox @ 10' f/11.8
Colour temperature at minimum power 4755K
Colour temperature at full power 5090K
Flash duration at maximum power, t.1 1/900th second. This approximates to the action stopping potential of using a shutter speed outdoors of 1/900th second. The figure used by most sellers is based on a t.5 time, which produces a much higher figure but which is far less meaningful.
Colour temperature consistency Variation between flashes is not more than 40K
Flash duration at minimum power, t.1 1/400th second. This approximates to the action stopping potential of using a shutter speed outdoors of 1/400th second. The figure used by most sellers is based on a t.5 time, which produces a much higher figure but which is far less meaningful.
Mains/battery Mains, can also be used with any 3rd party battery system
Standard S-fit accessory mount Yes
Modelling lamp power 150 Watts
Modelling lamp dims during recycling Yes
Switchable flash ready beep Yes
Open flash/test button Yes
Length of body (cm) 30
Remote control available Yes
Umbrella socket Yes, at base of unit.Accepts standard 8mm umbrella
Fan cooling Yes
Godox Witstro / Lencarta Atom
Power adjustment range 5 stops
Recycling speed 1.2 sec at full power0.3 sec at minimum power
Switchable slave sensor Yes
Weight (kg) 1.78
Power adjustment display Digital
Overheat protection system Yes
Can ignore Pre-Flash Yes, set to S2
Length of warranty 3 Years
Box contents 1 x SmartFlash 3 Flash Head 1 x 150W Modelling Lamp1 x Mains Cable1 x Sync Cable2 x Spare Fuses1 x Protective Head Cap


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Tags: SmartFlash, Studio Flash Head, WaveSync