Originally posted by xcharrier:
Very cool link... much appreciated.
But I have a question... in regards to the second curtian flash (in camera with built-in flash). While in second curtain mode, my flash fires at the beginning of the exposure and then at the end of the exposure. Is that correct? |
The second curtain sync will cause the flash to fire at the end of the exposure.
I believe that the 10D uses the pop up flash as an AF assist light and that would need to fire before the shutter opens if it is necessary. Also, the way E-TTL works requires an initial light pulse to evaluate the exposure, then after the shutter opens, the main pulse fires for the actual exposure.
If you see 2 flashes when you have 2nd curtain sync set, the above would be the possible reasons.
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