Sigma stuff is ... Quality control and unit by unit reliability has always been poor, whether lenses or flash units. I stay away from them.
Godfrey On Jan 7, 2007, at 1:34 PM, Dario Bonazza wrote: > I own the Sigma EF500 DG Super (PA P-TTL type, 2nd type, I think). > I asked > Sigma importers for Italy about its compatibility with the K10D and > they > replied "no problem, it's compatible and you can use it with your > K10D". > > So I took all my silliness in my hands and put the damn thing on > the K10D > hot shoe, switched bot them on and started shooting some test pics: > 1st = > OK, 2nd = OK, 3rd = black, all next pics = blackor almost black (only > available light was hitting the sensor) at any shutter speed. The > flash > fired every time (clearly visible in viewfinder), but synch timing was > obviously off. I tried P, Av, Tv, X and M modes. > > So I put the flash unit on my D: not a single flash was emitted by > the EF500 > DG Super over several attempts. Apparently, no synch signal was > perceived by > the flash unit. > > Not yet happy, I put the flash on the K10D again. Once again, the > flash > fired every time (clearly visible in viewfinder), but synch timing was > obviously off, as all pics turned out black or almost black (no > flash light > hitting the sensor). > > So I put the flash unit back on my D shoe once again. Everythinhg was > working well again: all flashes were emitted with proper timing and > proper > exposure was achieved. > > So, what's the lowdown in all this madness? > > Dario > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
