Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
I have not chosen the LX7 due to its brightness.
I'm not sure I understand. You decided against the LX7 because the lens was too fast?
Sorry for the confusion.
I've compared sample videos taken by the LX7 and RX100II and I feel that the LX7's image are brighter and the RX100 dimmer. I think the RX100 will do well with video lights than the LX7.