The first flash is the pre-flash used in P-TTL for integrated flash/ ambient TTL metering purposes before the mirror swings up.
The second flash is actual flash made for the exposure, approx 1/250 second before the second curtain begins to close. Godfrey On Dec 24, 2006, at 8:39 AM, Walter Hamler wrote: > I was trying out the slow sync(second curtain) flash last evening > with the > K10D. I don't think it is working properly. When the shutter speed > is around > 1 sec so you can see what is going on, the flash discharged when > the shutter > is first tripped, then is discharged a second time with the trailing > curtain. I thought there should only be one discharge, at the second > curtain. Am I missing something? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net