i think, the whole point of ttl is that the camera, not the flash, takes care of the exposure. i think no harm was done.
best, mishka ----- Original Message ----- From: "Stephen Hoffman" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, September 19, 2002 12:13 AM Subject: Setting ISO on flash > I think I may have made a mistake while shooting with my AF360FGZ flash > today but then again I may have been lucky. I shot quite a few frames in > TTL mode then switched to Auto. At that time I realized the flash was set > to ISO 400 while the film I was using was ISO 100. Of course while shooting > the next frames in Auto mode I did switch the ISO setting on the flash to > 100. My question is: did I do any harm while in the TTL mode or does the > camera simply read the light and adjust accordingly regardless of the ISO > setting on the flash? Thanks. > > Stephen > > (I'd rather be good than lucky but lucky will do in this case)

