Quality low-cost TTL radio trigger (Canon) available currently worth buying these days?

Hi, Peter. The listing if the ABs in the Guide was based on repots with supporting images from some early users. A Google search for "Alien Bee 1600 YN-622" produced a number of images, but my impression is that they were taken in lowish light and were more fill shots.

The AB needs another millisecond of burn time. The ABs seem to be not usable with this technique (tail burn). I'll revise the Guide acordingly. Thanks.
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Clive