I wonder if the SD output a the A/V terminal of the HF-G10 obeys the 709 (HD) or 601 (SD) color space ?

This info is useful for matching the color and gamma of this cam with others (HDV).

By SD, I assume you are referring to PAL? If that is the case then I'm fairly certain that PAL is 601.

As far as I know, rec. 709 is HDTV.