I am trying to use the SD700 with the Canon underwater case, and an external slave flash (SeaLife SL960D). The flash fires appropriately in slave mode. However, pictures on-land come out dark with the flash on, and actually ligher and better when I turn off the external flash. It appears that there is some feedback from the flash to the camera that changes camera settings somehow even though it is a pure slave. I tried various manual/scn modes, with different ISO and different external flash strength. Most times pictures with the external flash off come out better! Note that the internal flash is blocked and only used for triggering the slave.
Any ideas?
Opher
Any ideas?
Opher