10 bits per channel does not necessarily mean you have HDR. In the past, it was used to get finer gradations, which is in fact fairly important if you are work

10 bits per channel does not necessarily mean you have HDR. In the past, it was used to get finer gradations, which is in fact fairly important if you are working with black and white , to avoid banding. HDR involves mapping the 10 bits over a different tone response curve that covers a wider output dynamic range.