iTTL or manual with off camera flash

[walterpike]

Walter,

CLS light measurement for iTTL takes place IN THE CAMERA. You must just make sure that you light (direct or modified) is on the subject and that the the small round window on the side of the flash points in the direction of the commander (SU-800) or commander flash (pop-up or SB-6/7/900 and 910.

I got a special model (Pop) in to understand CLS. It helped a lot. Results are here: http://www.pbase.com/leot/pop

Thank you - I have a mannequin head I bought on bid or buy to practice portrait lighting on - will try with her.