I have a 430EX mounted on the hotshoe of a Canon 40D. I would like to use this in the studio and have the flash fire every time I shoot a photo. However it only fires sometimes. I am using manual (M) mode. The flash has exhibited this behavior from day one and I rarely use it because of this, now it is two years old.
When I shoot outdoors, the flash always fires if there is "not enough light". However I am not able to make it flash compulsorily.
Things I have tried that didn't produce results:
- Camera's "pop up flash button"
- "Manual mode" on Speedlite
- Reading the entire Speedlite manual front to back
- Reduce shooting speed to less than one per second
- Using program (
I am embarrassed to use this during a studio shoot because it will not work reliably and I don't know how to fix it. This shows the model I don't know what I'm doing and I need to regain their trust.