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Hi Mark.. I am just about to start selling my version of a lightning trigger. Just wanted to advise that I have hadgood results with a trigger and have been using one I purchased from HSF on E-Bay... Apart from the fact that they are very poorly made (bit home built) they still work. You MUST have auto focus turned off and dont use Bulb. set the exposure for 0.6 sec and around F:4 or 5.6. You will need to get bad results before good to learn the settings best for your camera.. I don't shoot in RAW as the file take too long to download if the lightning is going off its head.. Go for a medium JPG to start with.. Here in Adelaide we don't get real active storms so I can go to higher res and the flashes are sparse..
You can test your timing and lag with a LED flashlight. Just pulse the flash as the system reads the second flash in the pusle not the first. If you flash once you get nothing. I have an old Canon 300D and its works as well as my 40D..
You may have done all I mentioned, but I hope I have given at least some helpfull info..
Regards
Mardy
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