Gadget Infinity is an online shop based in Hong Kong specialized in electronic gadgets that truly reflects the sophisticated design of every tiny invention. They provide a wide range of electronic goods for digital cameras such as batteries, charger, flashguns, GPS adapter, wireless shutter, wireless flash triggers etc...
One of their most popular product is the Cactus V2 and V2s, a cheap flash radio trigger that allows you to wirelessly remote trigger your speedlight. When the pro top level radio triggers (Pocket Wizard) cost around £300 the set of transmitter and receiver, the GI Cactus triggers cost around £22.
The down side of these cheap triggers is their reliability and range. Their range is variable, some photographers did witness a range of 45 meters, on the field I've noticed a max range of 4 meters on my ones. Depending whether you shoot indoors or outdoors and if you are close from any radio interference they can be more or less reliable, but often you will notice lots of misfires.
But then more and more photographers that happen to also be DIYers posted article on some antenna extensions mod to these 'el cheapo' triggers. A lot of them claimed that the mod has doubled or even quadrupled the trigger's range.
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