I don't really understand how the dpi thing works in post processing. I don't really have a clue. So, could someone tell me how it works when you want, say, to save something with 1080dpi and what happens if you save it with, say, 72dpi? How do you how many dpi does a picture have whan you first open it? (I basically use only DPP for post processing).


If you need any other kind of information please tell me.


Thanks for you time and patience.


Andy