I'm runnin the last built of AspectHD v5 and I'd like to know how do I know the color space of my clips. My colorist "guess" it's Rec709 16-235, is that correct ?

Thank you.

Rec709, cgRGB 0-255.

any way the color space could have ended up been 16-235 ?

Yes, under user control. Either way a colorist should not care -- if there are there to make the color good for your output target, they can start with anything.

He mentionned something about a possible color shift if not setted in proper color space.

In anycase ty for answer David.