Girts. I'm guessing: I believe Auto Sensivity should be turned off when using a flash. I'm not shure the camera will be able to shift sensitivity this fast - I mean, when you press the release button half way down to focus, the camera will adjust sensivity to a very low light situation (400-1600). When the flash then fires, the camera must reset the ISO setting VERY quickly to perhaps 200 ISO - and also calculate the falsh duration for that sensivity during exposure. If the camera could do that in a way that would lead to correct exposure, I would actually be very surprised. That's probaly asking too much of the camera, isn't it? I only use Auto Sensivity if I don't know the shooting conditions in advance. When I'm using a flash, I know what the conditions are going to be. I hardly ever use Auto Sensivity, anyway. I choose the ISO setting my self for each sitiation. As a former film user that's still much easier than changing the film/film speed ;-)
Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Girts [mailto:[EMAIL PROTECTED] Sendt: 5. februar 2005 11:57 Til: [email protected] Emne: Re: flash on *istDs (was: Survey D and DS result) JB> Some TTL-flashes don't work right with the *ist D/*ist DS, in my experience JB> especially those with a red AF assist light. JB> My AF280T works fine with the *ist D, perhaps with a small tendency towards JB> overexposure (less than � stop off). At 200-400ASA most TTL flashes work all JB> right. If you�re shooting at 1600ASA, you may get excessive over exposure, JB> though. I am having problems with AF400FTZ on *ist DS. It either overexposes when the subject is near or underexposes if the subject is far. I am not sure if I wasn't over the 400 ISO when I did the shooting, as it might have gone up to 1600 by the auto sensitivity correction. The exposure errors were very bad though. I had to dial -2 for FEC to get appropriate exposure. Though it might be that the flash is faulty. Will try the flash on somebodies else digital, see what happens. Girts Riga, Latvia
