----- Original Message ----- From: "skye pdml" Subject: af 540 fgz trailing curtain question
> OK, so I did attend a flash class over the weekend but failed to learn > anything which might shed some light on my question so here goes. > > When I set my 540 flash to do trailing curtain, it flashes twice - I > think once at the beginning and once at the end. Is that normal? > (because that is not what I learned) What's going on there, if it's > normal? Your 540 is a P-TTL flash. That means it uses a preflash to set the output rather than quenching the flash when enough light has been output (TTL). The first discharge is a low capacity flash that tells the camera how much output is required for correct exposure. The second discharge is the actual exposure. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
