I've used the AF400T with the *istD in TTL mode with good results, both at ISO 400 and 200. Ditto for the Sigma 500 Super in pTTL, trailing curtain, and high-speed synch modes. I've found that when I have exposure trouble it's always the result of bad contact between the flash connector or foot and the camera. With a bad connection, the flash will sometimes still fire but the TTL or pTTL info seems to get lost. I've found that by wiping the contacts and reinstalling the flash or connector cord, the problem is solved. I'm willing to bet the most if not all of the reports of problems with digital flash exposure are due to bad connections. I think the D and DS hot shoes are particularly vulnerable in this regard. Paul
> > I have generally had better results with the 280T in auto mode than with > > the 360, which works the same way as your 500. > > I don't have any of the other flashes (besides the AF280T) being discussed > here, but I've used the AF280T with my DS several times now, and the > results have been quite good (although not perfect). Based on previous > threads, I used the AF280T set up for TTL Auto mode with the DS's ASA > setting at 400. I would say that the results were not quite as consistent > as when using the AF280T with a Super A or an LX, but the inconsistencies > were generally minor, and could easily be compensated for in digital > processing if necessary (usually, the differences were small enough to not > even bother with). > > [I also have an AF200T and an AF400T, but I haven't tried using either yet > with the DS, but I suspect that the results would be similar to those from > the AF280T.] > > [I haven't really used the DS's built-in flash yet.] > > Fred > >
