Trey is a professional photographer and he is famous for HDR photography technic. I found his video clip on the youtube about art of photography. He is sharing his ideas about his photography and tells us about his mistakes while he was taking photos on his first days of photography, I found his video very interesting the way he use the Aperture mode on his camera and takes the photo. But I could not understand how he is using Aperture mode for HDR photography with raw files, I think it looks very hard because if we take photos in Raw mode we have plenty of option while putting our photos in editing then we do not need HDR.
For the beginners using raw file are very important. Raw files are for the beginners and jpg files are for the professional photographers, they know how to use the camera.