<p>Hello everyone!</p> <p>Been experimenting with indoor flash with the GA645zi and tested a roll with the on-camera flash and then also connected up to a Bowens strobe. I recently saw a shot of a photographer use the GA645zi with the Contax TLA200 flash and then that got me thinking to use the camera with the 580exII and wanted to see how it's possible for the 580exII to measure necessary flash output, or is it a case of setting ISO/Tv on camera, put the flash on Manual and just measure the flash output with a lightmeter each time and adjust accordingly. Or will the 580exII external automatic flash exposure sensor work on the 645 eventhough it's not a EOS camera?<br> <br />Thanks in advance!<br> Johnny</p>
