Yeah I talked to the engineer today. The Iris will give the user to have it run auto according to screne brightness or it will alow set stops via the remote.
Optoma has another DC3 which I may get in a week or two. HD7100 it is, it's a HD7300 without the seperate scaler box. It will have all the connection on it's back panel. Nothing on price but I assume it will be a deal.