I have a question about the G9 and external flash. My question comes from experience with the G3 and Canon flashes.
With the G3 set for manual exposure, a Canon external flash also becomes completely manual -- that is, no ETTL flash control when the camera is set on manual exposure. The flash power can be adjusted from the camera, or with some flashes, on the flash.
Also, the G3 has a lot of "shutter lag" when used with external flash. This seems to happen even if the G3 is set for manual exposure and manual focus. The well known "half button press" helps quite a bit but should not be necessary when all controls are set on manual.
Does the G9 have the same operational characteristics?
Since there's no answers on this on the G9, I would like to share my experiences on my G7 and external flash. I normally use the Metz 28
for carrying along. It has the full ETTL circuitry that works with Canon cameras, and is small enough to be an easy carryalong thing. Needs to adjusted 1 EV down to give nice exposures, but when I do, its quite OK for a compact.
I have also used my EX 580 on the G7, and except for beeing way to big to handle on the small camera, also works well with the G7, with ETTL performance being OK.
There is shutter lag in the G7 when operating with flash, both with external and internal flash. I have not noticed any difference between the 3 different flash units, (internal/Metz/Canon), but the lag is there, and it is long enough to be really annoying. The G7 is, without flash, reasonably fast for a compact cam, but flahs ops is really slow.
If anyone have different experiences with the G9 please let me know