Hi. I am new to ios development and I am using swift to try to develop a sample app to connect a Canon camera to an iphone via a usb cable and I want to use the ImageCaptureCore framework to do this (that is I want to use the USB PTP). Although I see the documentation on the Apple site, I am still unsure where to begin. Is there any tutorials, etc. about where I can get started with this? I was able to find a couple of code snipets and piece together something with ICDeviceBrowser but when I load the program onto my iphone and connect the camera via usb, I am not able to detect any camera. So ideally I am looking for some sort of tutorial that goes through how to do this or if not, what do I have to do to at least be able to detect the camera from the iphone?