Help...

I have the 10D with the 550EX flash. I know now how to set up for rear curtain sync, but the flash will fire at the beginning and at the end of the second curtain.

How do I get the flash to only fire once?

Thanks for the help....

Canon learning curve is difficult. It took me a hour to find the custom menu button on the EOS 3.

Loren "still wish Canon had a couple of nobs" Crannell