Stas,

Many thanks - I did look hard for such a feature and completly missed it. Now you have confimed that it was there I went straight to it. Thanks again.

I have a been using a Canon 40D and EF100mm macro lens and wireless triggered flash heads. Using some 30 odd focus bracketing steps I find that the time interval between shots is often not enough for the flash heads to fully recharge. I could shoot manually but that removes one of the great features ...