[imkrystleco]

Originally Posted by inkista

Get out of Av. Shoot in Manual.* This is what I meant about the idiotic idiot-proofing.

You'll want to read the link I provided: "EOS Flash Confusion"

This is also the main reason I was gnashing my teeth at a lot of the CLS handwaving that McNally was writing in Hot Shoe Diaries. I just knew I'd end up having to explain this to bedazzled Canon readers of that book who had no idea how many blind alleys he was going to lead you down.

* ok, ok, if full Manual scares you, go spelunking into the Custom Functions, and tell your camera that you want your shutter speed to be at least 1/200s if you're shooting with a flash in Av mode (on the 450D, it's Custom Fn. 02: "Flash sync. speed in Av mode"). Just realize that you've completely thrown away your ability to balance ambient against flash.

Thank you so much for your help!!