My thinking has been that my choice of DV cam should be dictated by the best lens. But which has really the best optical performance. You know, that sharpness of detail. This led to me shortlisting a GX7b (Leica lens but poor review in camuser), MV550i (reviews say great picture quality), Gr DV2000 (1.2 aspherical - but I can't find anyone saying the lens is the best and it doesn't have manual shutter option), gs5b - bit better price wise. Also, are there manual functions of the canon or gs5 and gx7. I'd welcome opinions.