This is a weird one! :confused: almost looks like 2 shots superimposed, I can only assume that the room was not dark enough, so with the the cam on "BULB"
it took an image before the flash fired.

A couple of ideas to add (getting progressively more dangerous);

a Jacobs cracker (or Ryvita) being broken in two?....those things never break cleanly! :)

A hammer hitting a wet surface?

A hammer hitting and breaking plate glass?

A firework starting (or rocket taking off)?

Another one, which I've thought about since the cricket is on at the mo'...
fitting the trigger with a zoom / tele mic....every single shot would be one with the ball hitting bat, pad or wicket!
Could sit as a spectator enjoying the game without head behind a camera...then leave at the end of the day, knowing you have all the winning shots in the bag! :)

Unless.................. the duration of the flash was greater than the time it takes for a balloon to burst. This would cause the effect you've shown.

How do I slow the flash down? If I set it to 1/4 power will that do it?:confused:

Reducing the power level will give a shorter duration burst. I'm not 100% convinced that my original suggestion is the reason you've seen the double burst/not burst image, it was an educated guess.

Hope Don picks up on this thread. He'd shed some light on things.

Below is from the Nikon SB-800 manual, as can be seen reducing the flash duration reduces power.

1/1050 sec. at M1/1 (full) output
1/1100 sec. at M1/2 output
1/2700 sec. at M1/4 output
1/5900 sec. at M1/8 output
1/10900 sec. at M1/16 output
1/17800 sec. at M1/32 output
1/32300 sec. at M1/64 output
1/41600 sec. at M1/128 output

Ah, I see 'my' card being cut shot is there amongst many others. They are fascinating.

This is a BRILLIANT thread Lello :cool: :cool:
In the mean time ................. smartie pants :)

I will read through it properly tomorrow.

Don

Hi Don
I see you've been busy as well!
Link
I took about 20 shots to get this one, moving trigger around, changing the flash power,and changing aperture. Most of the other shots showed 2 balls (like super imposed shots) but looks like I nailed this one.:D