Have bought on Amazon a wireless Hama Flash Trigger sync to my old analog Canon flash trigger 580EZ for digital Casio Exilim EX-Z2000 clippers can. The flash trigger is wonderful! But unfortunately the photos are nothing. Took a long time until I checked it: The Casio sends a measurement pre-flash from on which the Hama responds properly and the Canon also triggers. This light is measured. The main flash of Casio missing then but the Canon external flash because of can not trigger as fast again, and therefore all the pictures are underexposed. The stupid thing about it: The advantages and the main flash of Casio done so in quick succession, that I had never even registered that there is lightning there twice, and may be disconnecting the pre-flash does not.