Cactus V5: transceiver-based triggering for the masses?

We review the Cactus Wireless Transceiver V5, Gadget Infinity's latest flash trigger. How do the new transceivers compare to other flash triggers?

Cactus V5 Transceiver

Since the jump to the 2.4GHz frequency band, eBay flash triggers are dependable and capable of competing with much more expensive brands. What now distinguishes one low budget trigger from another is not reliability, but rather its range of features and how easy it is to use. In our recent Bumper Xmas budget flash trigger review we evaluated the latest round of Chinese triggers.

The market never stands still and 2011 promises a new crop of flash triggers, much to the annoyance of anyone who just bought a set late last year. The first of these is the Cactus V5, due to be released later this month. We will also witness the appearance of the Pixel Bishop (successor to the Pixel Soldier, highly commended in our previous review) and the Yongnuo RF-603, which follows in the wake of the universally popular RF-602 series.

Gadget Infinity have sent me a pre-production set of the new Cactus V5 wireless triggers to test and evaluate. The final version will have several improvements which are listed on the last page of this review.

Cactus V5 Transceiver

This review is split into the following sections:

  1. Introduction
  2. Features and controls
  3. Performance
  4. Conclusion


  • Transceiver design
    Instead of having dedicated transmitters and receivers, any unit may be changed to “TX” or “RX” mode at the flick of a switch.
  • Frequency self-tune
    Allows the V5 to work through sudden changes in temperature.
  • Multi-channel triggering
    Any receiver set to channels 1, 2, 3, 4 or 5 will be triggered by a transmitter on channel 1.
  • Wireless shutter release function
    As well as a flash trigger, using an optional cable the V5 can be used as a remote camera shutter release, including support for bulb mode.
  • Dual hot shoe
    There is a hotshoe on top of the V5 that allows you to use flashes on top of your on-camera transmitter.


Frequency 2.4 GHz
Channels 16
Range 100m
Sync port 3.5mm stereo
Sync voltage Up to 300V
Sync speed < 1/1000 sec
Batteries 2 * AAA
Operating temperature -20° to +50°C
Dimensions 82 * 70 * 37mm
Net weight 58g

So what’s special about the Cactus V5? Those using its predecessor, the Cactus V4, will see a major step up, though this is mainly because the rest of the trigger market has advanced in leaps and bounds since the V4’s introduction in early 2009. Features you should expect in all current generation cheap triggers include a reliable 2.4GHz signal, a low-profile design with decent built quality and a shutter release mode. As well as these basics, a distinguishing feature of the V5 is the transceiver-based format which allows any unit to act as transmitter or receiver.

Next: Features and controls

David Selby
David is a keen photographer and has been editor of Lighting Rumours since 2010. When not writing about lighting, he works as a data scientist at the University of Manchester, UK.