e-TTL and second curtain flash

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Blue Eagle

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I recently took a set of photos at the halfords tour series and as the light faded, I popped on my flash (jessops 360AFD). It was set to e-TTL metering on the flash and second curtain firing on the body.

However i've just been going through the photos and it was definitely firing first curtain as (annoyingly, i was trying to avoid this) the trail emerges from the main image and goes forwards in the direction of movement. (i could post an example if you need it)

I was wondering, is this because of the way e-TTL works, in that it doesnt know the flash time until the shutter is already up so it has to fire first, or could it even be that I was panning faster than the cyclists where going past me?

I must admit they were flying along and i had to spin very quickly to keep up :p
 
Blue Eagle said:
I recently took a set of photos at the halfords tour series and as the light faded, I popped on my flash (jessops 360AFD). It was set to e-TTL metering on the flash and second curtain firing on the body.

However i've just been going through the photos and it was definitely firing first curtain as (annoyingly, i was trying to avoid this) the trail emerges from the main image and goes forwards in the direction of movement. (i could post an example if you need it)

I was wondering, is this because of the way e-TTL works, in that it doesnt know the flash time until the shutter is already up so it has to fire first, or could it even be that I was panning faster than the cyclists where going past me?

I must admit they were flying along and i had to spin very quickly to keep up :p
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Second curtain sync is a flash gun function on Canon. Setting it on camera is for the pop-up only.

It only works on-camera too, or via a hard wire cord, ie not wireless remote. It gets the firing signal through one of the E-TTL pins.

You can only get remote second curtain sync with an E-TTL Pocket Wizard.
 
Ah, so second curtain is a function of the flash rather than the body? And looking at my flash it doesnt seem i can enable it....ah well :P Thanks :)
 
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