Thanks Lisa, I'm not a master at maya yet, most of my knowledge is in modelling/texturing/animating - so there's a whole other universe of maya features that I'm unsure of! Wow, my mind almost buzzes when I think of it! Thanks for your help. My copy of maya was given to me by someone who upgraded, and unfortunately, WITHOUT manual! So, it's a little tricky. I'll give it a go, and see how I get on - no doubt at some point I'll get confused and start crying like a baby with a soiled diaper! I feel very fortunate to have found someone with such great experience in camera tracking, if I have any other problems or questions is it OK if I ask you for advice? It would be such a massive help... Kind Regards, Geo.