Originally posted by UncleVanya In optical slave mode does it ignore the preflash?
I know the AF500 and AF 360 will not work in optical slave with anti- red eye, but I have not tried with p-ttl on the camera. I use manual and do test exposures here.
I will try p-ttl tomorrow. I doubt if it will work
Anyway, using off camera flashes, p-ttl for the inbuilt flash would not meter correctly if the slaves did not fire.
The above exposures were with the ist-ds in manual flash mode, and I stopped down to get the pattern on the wall.
Edit: I tried the AF500FTZ in SLave mode with the camera in p-ttl mode.
The image is completely underexposed, I think because the AF500 fires during the preflash and not during the exposure