Hi, I have a Visual C++ application that controls the digital USB camera. Currently this is done using camera's SDK. I am looking for vendor-independent ways to communicate with digital cameras. 1. Does WIA API support viewfinder mode, i.e. can I have "live preview" from the camera in my application? 2. Can I communicate with digital camera directly through PTP (Picture Transfer Protocol) from my application, thus avoiding WIA? Is there some kind of API available for PTP? Thanks a lot.