Hello Godfrey, I have used up to three of them. You are correct, the range is limited. On top of that, I have had failure when the ambient light is too bright, also. It also takes just a little bit of up front time, much like the P-TTL kind of thing, which allows blinkers even more time to close their eyes.
-- Best regards, Bruce Wednesday, September 28, 2005, 3:13:37 PM, you wrote: GD> On Sep 28, 2005, at 8:44 AM, Glen wrote: >>> If you want dedicated wireless operation, the Pentax AF360FGZ and >>> Sigma EF 500 DG Super have been the only two fully compatible units >>> that support all features on the DS body. The new Pentax AF540FGZ, >>> due out very soon, will also support those features and have higher >>> output with swivel head like the Sigma. >> >> I've been wondering about this wireless capability. Does it use >> line-of-sight infrared or radio control? Does anyone know the >> effective usable range of the wireless feature? GD> Not sure as I haven't got any of them yet. I believe the wireless GD> control is done by modulating the main flash at low power. As these GD> are relatively modest power output anyway, I can't imagine it being GD> useful for complex setups more than 15' between units. GD> Godfrey
