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Interfit S1a HSS TTL Flash, AC only

Code: INTS1A
  • Now £319.99
  • (FREE UK Delivery)
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  • Speed Super sharp images with HSS up to 1/8000th 
  • Power Up to a massive 500w with precise control of 1/10th increments gives absolute control
  • Functionality Can be controlled from up to 90m with multi-functional remote
  • Ease Full TTL compatibility
  • Portability Fully battery powered, with up to 430 full power flashes from a single charge!
  • Compatibility S type modifier mount giving countless light shaping options.

 

Free Standard Delivery to UK mainland addresses
Pay with PayPal Pay securely with your PayPal or spread the cost with PayPal Credit
1 Year Warranty We will replace any faulty Flash unit with a one year period*
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The Interfit S1a AC, HSS & TTL Flash is the AC-powered counterpart to the award-winning S1 and contains all of the same intelligent TTL and HSS technology.

Features:

  • Through The Lens Metering in TTL Mode uses the S1a’s entire 9-stop power range (500W – 1.9Ws) and is automatically calculated in 1/10th stop increments, and allows for ± 3 stops of exposure compensation
  • Manual Mode utilizes the entire 9-stop power range, controllable in 1/10th stop increments
  • High Speed Sync in Manual Mode at up to 1/8000th of a second shutter speed using the top 3 stops in the power range and is manually adjustable in 1/10-stop increments
  • Fast Recycle Time of only 2 seconds at full power allows for rapid shooting in a fast-paced studio environment.
  • Colour Accurate to within ±100 Kelvin using high-tech insulated-gate bipolar transistor (IGBT) technology
  • Short Flash Duration for freezing action and sports motion between 1/1000th of a second to 1/9000th depending on power output using IGBT technology.
  • Integrated Wireless System with remote TTL flash exposure compensation and manual power control in three groups from camera position using the S1 Remotes for Canon, Nikon, or Sony (sold separately)
  • Frosted Glass Dome softens and disperses light evenly through large and small light modifiers alike, from large octaboxes to small beauty dishes and reflectors while protecting the user-replaceable flash tube.
  • Aluminium Construction with an attractive matte finish gives the unit greater heat dispersion, durability and weight-to-rigidity efficiency
  • Firmware Upgrade via Micro USB Port for future fixes and features
  • Bowens® S-Type Mount is compatible with a large scope of adapter rings and modifiers such as softboxes, reflectors, and grids

Please note: 

UNIVERSAL MANUAL REMOTE BACKDATE 2.6 

If you have purchased the S1a with the Universal Manual Remote (INTR1B) you will need to backdate your S1 head to 2.6 for your remote to work. This is because we now ship the flash heads with the latest software 2.7 which is incompatible with the Manual Remotes. firmware can be downloaded from the download tab above.

Box Contains: 

  • 1 x S1a Flash Head
  • 1 x 18cm (7") Reflector - with Bowens® S-Mount
  • 1 x 4m (13') Power Cable
  • 1 x Micro-USB Cable
  • 1 x Sync Cable
S1A
Maximum Watt -Seconds 500Ws
Power Range 9 Stops (2.0 – 10.0)
Full Power Recycle Time 2 Seconds
Flash Duration 1/1000 – 1/16,000 (max-min power)
Colour Temperature 5700K +/- 100K
Fitting Type Bowens® / S-Type
Modelling Lamp 10W LED
Triggering Interfit TTL-C/N/S 2.4GHz Remote, Sync Port, IR/Optical
Shooting Modes Manual, TTL (Canon, Nikon, Sony), HSS
Maximum Flash Sync Speed 1/250sec. in normal sync mode, 1/8000sec. in high speed sync mode
Operating Voltage 220-230VAC or 110-120VAC
Fan Cooling Yes
Auto Power Dump Yes
Flash Ready Indicator LED and switchable audible
Dimensions 32 x 13cm (12.6 x 5.1″)
Weight Kg 2.25Kg (4.9lb) Kg
In the Box 1x - S1a Flash Head, 1x - 18cm (7") Reflector - with Bowens® S-Mount, 1x - 4m (13') Power Cable, 1x - Micro-USB Cable, 1x - Sync Cable
General
My [HB320/HBU250/INTS1/INTS1A] will not connect to the trigger?

Please ensure that you are on the same channel (this will be the number eg. 1a) on both the light and the trigger, as well as ensuring both the light and the trigger are up to date with your camera model. You can find firmware here

Please ensure your camera hot shoe settings are correct, please refer to your camera user manual.

If you think you have updated your firmware and it doesn’t suit your older camera type, please contact us for backdated firmware files – you must have a Dropbox/Google drive account to enable us to send them.

 
How do I set one of my [HB320/HBU250/INTS1/INTS1A] to fire at a higher/lower setting than another light on the same channel?

Simply set up the lights on the same channel, then set the group to a different setting, from here you can control individual lights. For example, one [light] can be on 1A at 4.5 and another [light] can be on 1B at 5.0 – as long as they are on the same channel they will fire at the same time with different settings.

How do I change the flash tube to my [HB320/HBU250/INTS1/INTS1A/F121]?

Please see this video on how to change the flash tube.

Can another light fire my [HB320/HBU250/INTS1/INTS1A/F121]?

Yes! All our Interfit flash range will have optical sync which will enable your flash to be triggered by another light source, simply set the mode to CELL and your [HB320/HBU250/INTS1/INTS1A] will be fired by another light. Cell mode works on the speed of light, for best results use a direct line. Please note, on this mode you cannot control HSS or TTL.

How do I connect my [HB320/HBU250/INTS1/INTS1A/F121] direct to my camera with a sync lead?

With the sync cable that comes with the [HB320/HBU250/INTS1/INTS1A] plug it directly into the PC Sync Socket on your camera. Entry-level cameras do not have these, but you can buy an adapter. Like cell mode, you will not be able to control HSS or TTL using this method to fire the lights.

My trigger will not fire my [HB320/HBU250/INTS1/INTS1A/F121] when connected to my camera?

Check that the hotshoe settings on your camera are set up correctly, refer to your camera’s user manual. 

Please also make sure all contact points on both the camera and trigger are clean and are not damaged.

Can I use another trigger to fire my [HB320/HBU250/INTS1/INTS1A] other than the S1 Nikon, Canon Sony and Manual triggers?

We cannot guarantee any third-party equipment will work with our Interfit lights as they would not have been tested. If they do work, it is not guaranteed that you will be able to control HSS and TTL functions with them. 

Can I plug my [HB320 /INTS1/INTS1A/Monolight/F121] into an extension lead?

Yes, but like with any socket do not overload the extension lead and make sure it is a properly rated, surge protected extension lead.

Can I use my [HB320/HBU250/INTS1/INTS1A/Monolight/F121] in Europe?

Yes you can use your [HB320/HBU250/INTS1/INTS1A/Monolight/F121] in Europe.

There is a delay when firing my [HB320/HBU250/INTS1/INTS1A] or it fires intermittently?

Please ensure that both the light and the trigger are up to date with your camera model. You can find firmware here. You could be over firing the flash, the higher the setting of the light intensity, the longer the flash tube will take to recharge.

The flash on my [HB320/HBU250/INTS1/INTS1A] doesn’t work?

Please ensure that both the light and the trigger are up to date with your camera model. You can find firmware here. Your flash tube may have reached the end of its lifespan, you may need to purchase a replacement. Please also ensure that the flash tube is installed correctly - see this video on how to change the flash tube.

Whats the Max & Minimum flash duration on manual mode?

How long will my order take?

Do you ship to the EU?

Do I have to sign for my delivery?

Do You Use Reusable Packaging?

Can I Return My Item?

Payment

Making a Purchase

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You will be asked to provide certain information we need to enable us to process your order such as your preferred delivery address and payment details. It is your responsibility to provide us with sufficient information to process your order. 

We will acknowledge receipt of your order by email. This is not our acceptance of your order, but confirmation that it has been received.

Cards Accepted

We accept all major credit and debit cards

 We accept all major debit and credit cards including
- Visa
- Master Card
- Maestro
- American Express
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